An Uber driver arrested on suspicion of murder in the fatal shooting of a passenger is being held without bond in a Colorado jail.

Michael Andre Hancock made his first court appearance Saturday after his arrest on Friday in the shooting on an interstate in Denver.

He has not been charged and it's not clear if he has a lawyer.

A police report says the 29-year-old Hancock told a witness that he fired after his customer tried to attack him.

Court records show Hancock has no criminal record in Colorado. His father told KDVR-TV that his son is married with two children, works as a counselor at a home for troubled boys, and attends college.

An Uber spokesman has said the company's policy that bars drivers and riders from carrying firearms applies in Colorado.