Investigation into Border Patrol agent killing in Vermont reveals Delaware County, Pa. connection [Video]

COVENTRY, Vt. — A Washington state woman charged in connection with the fatal shooting of a U.S. border patrol agent in Vermont had been in frequent contact with someone whom authorities have linked to homicides in Pennsylvania and California, a federal prosecutor said in court documents Monday.

Teresa Youngblut, 21, faces two weapons charges in connection with the death of Border Patrol Agent David Maland, 44, who died Jan. 20 during the shootout in Coventry, a small town about 20 miles (32 kilometers) from the Canadian border.

She had been traveling with Felix Bauckholt, a German citizen who also was killed, and the pair had been under surveillance for several days.

In a motion filed Monday, U.S. Attorney Michael Drescher said Youngblut should be detained as the case …