PORTLAND, Ore. -- U.S. marshals arrested a Portland-area attorney Thursday on sexual assault charges.

Officials said they arrested Jerald Keene after receiving a request from police in Steamboat Springs, Colo., to have Keene booked and locked up.

Detectives in Colorado believe Keene sexually assaulted a 13-year-old boy around Christmas of 2006.

Officials said Keene knew the boy. He is now facing extradition to Colorado.

Keene is an appellate lawyer with Reinisch-Mackenzie, which is based in Tigard. Most of his cases focus on workers' compensation and he has spent much of his time in the Oregon Court of Appeals and the Oregon Supreme Court.

A colleague and friend who wanted to remain anonymous said Keene is a "lawyer's lawyer" and a man of great integrity.