On Friday, the FBI said it arrested a 21-year-old Washington state woman in the deadly shooting of a U.S. Border Patrol agent in Vermont.
Teresa Youngblut is charged in Monday’s killing of Border Patrol Agent David Maland.
The FBI said she and a German man who died in the firefight had been under surveillance for several days.

Maland stopped Youngblut and Felix Baukholt on Interstate 91 in Coventry on Monday because Baukholt appeared to have an expired visa, according to an FBI affidavit. During the stop, Youngblut opened fired on Maland and other officers and Baukholt tried to draw a gun but was shot, the affidavit states. At least one border agent fired on Youngblut and Baukholt, but authorities haven’t specified whose bullets hit whom.
The FBI said investigators had the pair under “periodic surveillance” since Jan. 14 after an employee at a hotel where they were staying reported concerns about seeing Youngblut carrying a gun and both of them wearing all-black tactical clothing.
About two hours before the shooting, investigators watched Baukholt leave a Walmart with two packages of aluminum foil. Then he was seen wrapping unidentifiable objects in foil while sitting in the passenger seat, according to the affidavit.
Authorities later found a ballistic helmet, night-vision goggles, respirators and ammunition in the car, along with a package of shooting range targets, some of which were used. They also found two-way radios, about a dozen “electronic devices,” travel and lodging information for multiple states and an apparent journal.
It was not clear where in Washington Youngblut was from. Court documents only stated that she had a Washington driver’s license.
