"There were no obvious signs of injury and her death does not appear suspicious or criminal in nature," prosecutors said.The university said in a statement, "The Department of Public Safety has been working closely with local and state law enforcement and does not believe there is any related threat to campus or the surrounding area."Ewunetie was last seen at about 3 a.m. on Friday near Scully Hall on the school's New Jersey campus, according to the university.Her phone's last ping was at 3:30 a.m. Sunday near an off-campus housing complex that's about a 30-minute walk from her dorm, according to Universe Ewunetie.Later on Thursday, the governor tweeted, "We are heartbroken by the tragic news that missing @Princeton University student Misrach Ewunetie was found dead this afternoon."