PHOENIX (3TV/CBS 5) - Medical student Jessy Pacheco is back in the U.S. after he disappeared last week in Mexico.
Although he is from Arkansas, his family said he lived in Phoenix up until a few weeks ago.
His cousin said he was in Arizona for about three months for rotations.
Government officials in Mexico said Pacheco and a classmate went to a club called Strana with two women Saturday night.
Officials said they were waiting for an Uber near the club when a group of men shot and killed Pacheco's classmate.
They don't know what happened to Pacheco after that.
A Mexican governor said that Pacheco was found safe and flew back to Dallas. He was with his mother.
An investigation is underway.