The FBI joined the search for a teenager attending Valencia College who disappeared last Friday, according to Orange County law enforcement.

Miya Marcano, 19, was last seen last Friday just before 5 p.m. when her family noticed she disappeared after she missed a flight home to South Florida. Armando Caballero, a 27-year-old maintenance worker at Marcano’s apartment complex who improperly used a master key to enter her apartment on the same day Marcano disappeared, is the “prime suspect” in the case, Orange County Sheriff John Mina said on Thursday. Caballero was found dead Monday morning of an apparent suicide, and there are no other suspects, he added.