Updated

A California man is in custody after federal officials say he groped and sexually propositioned a teenage girl on a flight from Los Angeles to Salt Lake City.

The U.S. attorney's office in Utah says 67-year-old Hans Loudermilk of Oceanside, Calif., was arrested Tuesday at the Salt Lake City airport.

Prosecutors say a 15-year-old girl sitting next to Loudermilk on the flight accused him of touching her chin and rubbing her leg and thigh during the flight.

The girl told the FBI that Loudermilk told her he could teach her things sexually that boys her age could not and said she was old enough to marry him in Utah.

Messages left with Loudermilk's attorney, Benjamin McMurray, were not immediately returned Friday.

Loudermilk made an initial appearance in a Utah court Thursday and faces a detention hearing Monday.