A man remained in jail Thursday after federal authorities arrested him in connection with the 2001 Maryland cold case death of a former girlfriend’s mother.

A U.S. marshals task force arrested Eugene Teodor Gligor, 44, in neighboring Washington on Saturday based on a warrant alleging he killed Leslie Preer.

In a statement this week, the Montgomery County Police Department said the man has been charged in its jurisdiction with first-degree murder.

It wasn’t clear whether Gligor has retained…