A security guard died after a fight broke out over the weekend at a Mesquite fitness center, police said. Mesquite police were called about 4:30 p.m. Saturday to the Fitness Connection in the 2000 block of Town East Boulevard, near LBJ Freeway, where the man was assaulted. The man, identified by family as 43-year-old Patrick Prejean, was taken to a hospital and later died. A family member told KDFW-TV (Channel 4) he’d been working as a security guard at the gym since last summer. Police said his cause of death has not been determined. Police said they were aware of...