The revelation was included in court documents filed hours before Teresa Youngblut was set to be arraigned in a Vermont federal court.

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 Washington state woman has been charged in the fatal shooting of a U.S. Border Patrol agent in Vermont, which happened days after authorities began watching her and a German companion who also died in the roadside shootout,

During a search of the car after the shootout, authorities found cellphones wrapped in foil, a ballistic helmet, night-vision goggles, respirators and ammunition.