Updated

The alleged lover of the pregnant missing wife of a U.S. Marine based in Southern California has been arrested in Alaska on a federal warrant.

Cynthia Kott, a booking clerk at the Anchorage Correctional Complex, said Monday that Cpl. Christopher Brandon Lee was arrested at 10 p.m. Sunday. A law enforcement official who was not authorized to speak before a noon news conference and requested anonymity said the arrest was in the killing of Corwin.

Court papers show Lee was the lover of 20-year-old Erin Corwin, who disappeared June 28 after leaving her Twentynine Palms home.

Corwin had planned to meet Lee for a hunting trip. Marine Cpl. Jonathan Corwin reported his wife missing the next day.

An affidavit says the investigation was focused on Lee.