School-bus driver arrested in teen sex.

A 62-year-old Queen Creek Unified School District bus driver has been arrested on suspicion of having sexual contact with a 15-year-old girl on his bus, the Maricopa County Sheriff's Office said Sunday.

According to the Sheriff's Office, John Joseph Byrne of Queen Creek admitted having a sexual relationship with the girl since she was 14.

The girl reportedly told investigators Byrne had been molesting her over a three-year period when they were alone on the bus, escalating Friday to intercourse.

Sheriff's deputies arrested Byrne late Saturday on 10 counts of sexual conduct with a minor and four counts of sexual abuse.