Missing Ohio student's parents: Nothing was amiss

CINCINNATI (AP) — The parents of a Cincinnati college student missing since Sunday say nothing was amiss with their son the day before he disappeared and that he was "his normal, happy self."

Missing-College-Stude Sidd

Laura Lewis, spokesperson for the family of missing University of Cincinnati student Brogan Dulle, adjusts a sign near the university campus, Thursday, May 22, 2014, in Cincinnati. Some $20,000 in rewards were being offered Thursday as the search grew for the student missing since early Sunday. (AP Photo/Al Behrman)

At a news conference Friday, Beth and Tom Dulle (DUHL'-ee) said they're worried sick about their 21-year-old son and just want him to come home.

University of Cincinnati sophomore Brogan Dulle was last seen around 2 a.m. Sunday after leaving his apartment to look for his missing cellphone.

Police say that Dulle left without his wallet or keys and that leads have gone cold in the case.

Lt. Col. James Whalen told reporters Thursday that there is no evidence of foul play and that police are operating on the assumption that Dulle is missing of his own accord.