The wife of a Marine charged with murdering another Marine who was pregnant is visiting her husband in a Mexican jail, which has the North Carolina prosecutor in the case worried.

Onslow County District Attorney Dewey Hudson said the Marine Corps granted leave to Lance Cpl. Christina Laurean to visit her husband, Cpl. Cesar Laurean. Hudson only learned about her request last week.

Hudson told reporters that he got word Christina Laurean was already in Mexico, where she traveled from Camp Lejeune.

"It was determined her request had to be allowed," Hudson said during a news conference Thursday. "We have taken proper steps to maintain contact with Christina while she is in Mexico."

Cesar Laurean is charged with first-degree murder in the December death of Lance Cpl. Maria Lauterbach, who had accused him of rape.

Laurean fled a day before Lauterbach's body and that of her unborn child were found buried in his backyard. He is fighting extradition.

Authorities say Christina Laurean has cooperated with investigators.

The Associated Press contributed to this report.