A University of North Carolina PhD student shared several posts on social media complaining about his academic adviser before allegedly shooting him dead in the science lab and plunging the Chapel Hill campus into lockdown. Tailei Qi, a 34-year-old graduate student majoring in applied physical sciences, was arrested on Monday and charged with first-degree murder in the killing of faculty member Dr Zijie Yan. The motive for the shooting remains unclear but his account on X, formerly known as Twitter, reveals he had complained grumbled about his head of lab in the lead-up to the shooting. In other posts, he also railed against hard work, aired his grievances with some “girls and tattletales” and complained about bullies in the US. “Bully in america seems to be a problem. It often comes with people not stopping them at the first time,” he wrote in one bizarre post in August 2022, reviewed by The Independent. “Explanation is not a solution but makes them feel others will plead them every time they raise a problem, making them voyeur to find an excuse day and night.” Two weeks later on 18 August 2022, he tweeted about his “PI” – an abbreviation for his head of lab – handling “these girls and tattletales”. “Just have a talk with my PI and get his promise. He should have more experience to handle with these girls and tattletales,” he wrote. “Then, we can just get ourselves out of these stupid topic. Let’s just focus our attention on nature.I won’t change anything if not necessary.” Two months later in October 2022, he referred to his PI again and an unidentified “group of people”. “Both the group of people to say I am lazy and that to prove me working hard instead of telling me that are trying to consume my privacy. I judge their motivation is only to tell my PI then control me by taletelling,” he tweeted. “But it’s weird when I talked about it with my PI, he said no people spoke to him about that. so it’s nothing but some voyeurism for these people?” Yan headed up the Department of Applied Physical Sciences and physical chemistry group the Yan Research Group, which Mr Qi joined when he began his graduate program at UNC in 2022. In other online posts, Mr Qi addressed a mystery woman who he vowed to “just let her go” and his exhaustion with his workload. “I used to walk [sic] 80+ hours per week and I feel relaxing and energetic. Now I only work 60+ hours per week and I feel tired,” he wrote in one. In a post in July 2022 – before he is believed to have started at UNC that fall – he posted a cryptic message calling his treatment by an unnamed boss “disgusting”. “Just feel my privacy was insulted. When I work, I will think I was showing the boss I am working instead of interests, devaluing the meaning of my work,” he wrote. “That’s so disgusting. Self-respect block me from working. Then it takes pains to convince myself what I do is just because I like.” In another post that same month, he wrote that “only work with no play makes Jim a dull boy”. In one of his most recent posts in early August 2023 – just weeks before the shooting – Mr Qi issued an appeal to meet people at the college. “I would like to make some new friends. I am a second-year PhD student, interested in nanoparticle synthesis, optical trapping, self-assembly, spectra analysis, and ML,” he said. “a bit stupid in daily trifles, very enthusiastic talking about research. Reach me if inerest.” The Twitter account has the same name and the same image as both Mr Qi’s bio and the person of interest sent out by police during the brief manhunt. It describes him as “Graduate student @UNC, engaged in light-matter interaction and related materials”. Mr Qi previously studied at Wuhan University before moving to the US from China and studying at Louisiana State University. He joined the Yan Research Group at UNC in 2022. At around 1pm on Monday afternoon – just days into the new term of the second year of his PhD studies – Mr Qi allegedly entered the science lab at the UNC’s Chapel Hill campus and shot and killed Yan. Law enforcement arrived on the scene around two minutes later and the campus was plunged into lockdown, with officials warning that “an armed and dangerous person” was at large. The wrong person was briefly arrested after the unsuspecting individual missed the shelter-in-place alerts. Soon after, the UNC Police released an image of Mr Qi, calling him a person of interest and warning the public that “if you see this person, keep your distance, put your safety first and call 911”. Around three hours on from the shooting, police confirmed that a suspect had been arrested near a residential area 10 minutes away from campus and the lockdown was lifted. The gun is yet to be recovered, police said. The motive for the attack remains unknown at this time. “To actually have the suspect in custody gives us an opportunity to figure out the why and even the how, and also helps us to uncover a motive and really just why this happened today. Why today, why at all?” UNC Police Chief Brian James said in a press conference on Monday. “And we want to learn from this incident and we will certainly work to do our best to ensure that this never happens again on the UNC campus.” Read More UNC shooting – latest: Motive remains unknown after shooter kills faculty member in Chapel Hill He moaned about work, ‘bullies’ and his head of lab online. Then police say he shot dead a UNC faculty member A new college term, a faculty member killed and a student arrested: What we know about the UNC shooting

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Mauricio Pochettino empathises with supporters angry about the Premier League’s decision to move Chelsea’s trip to Wolves to Christmas Eve, admitting it has thrown his festive plans and anniversary celebrations with his wife into chaos. The league confirmed on Thursday that the fixture, which has been pushed back 24 hours to accommodate TV coverage, will be the first played on December 24 since Manchester United played Leeds in 1995, a move that has drawn a backlash from fans. Scheduled for a 1pm kick-off, it could leave supporters struggling to make travel arrangements with train timetables typically amended or curtailed the day before Christmas, while there are also concerns it will impact time supporters traditionally spend with family. Pochettino is set to be doubly affected by the move, as not only is it Argentinian custom to begin Christmas celebrations late on December 24, the previous day also marks his and his wife’s 31st wedding anniversary – which he will now spend travelling to Wolverhampton. Despite not being consulted by the league he conceded that the club has little choice but to go along, but backed objections by supporters who have spoken out. “It’s a little bit strange but we need to accept the rules of the Premier League, that we need to go there and to play,” said Pochettino. “(In Argentina) we celebrate on the night of the 24th. At 12 o’clock on the night we start to celebrate Christmas. More than the 25th because you’re asleep nearly all day. Here it’s different because you celebrate on the 25th with the family. “I need to see things in a different way. For sure our fans are not happy but we need to accept this new era in football. “(The Premier League) didn’t ask us. They wanted some meeting with me and all the coaches one week before the season. I said I’m more than happy to share time with you, but it’s better if you prepare the meeting before the end of the season to prepare the next season. “If they ask me I will give my opinion, but at the moment we are not involved in the decisions.” He added: “I don’t know what to do (with my wife). I need to find some ideas to compensate. (Search online for) ‘unhappy wife’.” The Wolves game is the first of three in seven days for Chelsea over the Christmas period, with Crystal Palace due at Stamford Bridge on the evening of December 27 before visiting Luton on December 30. The Palace game has been moved from Boxing Day in order to accommodate the controversial Christmas Eve fixture. Pochettino reiterated that supporters’ concerns must be paramount in scheduling decisions. “We play and we work and all that we are doing is for our fans,” he said. “Without fans, football (is nothing). We need to protect, and to care, and to look after our fans. “Of course I agree with them, that I am not happy if they are not happy. It’s common sense. I can understand. “I don’t know what is behind it. I don’t know why. No one explained. I cannot tell. I hope it’s one time and never again, but we’ll see what happens. “People love football in England and they are going to be there. Our fans are going to be there supporting the team. But I don’t know if it’s going to be a regular situation.” Asked whether the club would offer a new contract to Conor Gallagher – who has captained the side in the absence of injured pair Reece James and Ben Chilwell – Pochettino likened the situation to the balancing act he now faces on the home front. “It’s like how we were talking about my wife,” he said. “It’s about to match and to feel good being together. It’s like a marriage with the club. They both need to feel good, then you can drive at a good deal. “He is a player that is doing fantastic. He’s an amazing player and we’re so happy with the way he is doing things.” Read More Kyle Walker says Manchester City will be wary of Marcus Rashford in derby Tottenham extend lead at top of Premier League with victory at Crystal Palace Lauren Hemp effort enough as England edge Nations League victory over Belgium Tyson Fury: Ngannou fight like Djokovic facing table tennis player at Wimbledon Matthew Mott wary of ‘raging favourites’ as England look to avoid further shame Pep Guardiola condemns Man City fans who sang offensive Sir Bobby Charlton chant

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