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

Jennifer Castro, a spokesman for the Anchorage Police Department, said Monday that 24-year-old Christopher Brandon Lee was arrested at 9 p.m. Sunday at a traffic stop on a warrant out of California.

Castro says San Bernardino County officials have charged Lee with homicide.

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 focused on Lee and the unborn child may have been his.