SAN BERNARDINO, Calif. -

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.

In a brief statement Monday, the Anchorage Police Department confirmed that officers assisted in taking Lee into custody at about 9 p.m. Sunday.

"Lee has been charged with homicide by officials in San Bernardino County," police wrote. "Lee was taken into custody without incident during a traffic stop and was transported to the Anchorage Jail."

APD spokesperson Jennifer Castro says Lee was arrested at an intersection in the Jewel Lake area.

"He was taken into custody at Brandywine Avenue and Ticonderoga Place," Castro said.

Castro says officers who participated in the arrest were drawn from both APD's Special Assignment Unit, which has experience handling higher-profile criminals, and the Safe Streets Task Force which has worked extensively with the FBI.

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.

APD officials deferred further questions to the San Bernardino Sheriff's Department and the Los Angeles office. California news outlets report that authorities there will host a press conference on Lee's arrest at 11 a.m. Alaska time.

Channel 2's Chris Klint contributed information to this story.