The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives sent an alert to federally licensed firearms dealers a day after the shooting seeking information related to any gun purchases by Michelle Jacqueline Zajko.

We were shocked and saddened,” said one resident of Newport, Vt., of the slaying of the US Border Patrol agent David Maland last week.

The weapon that killed Agent David Maland last week in northern Vermont was bought by a person of interest in a double murder two years ago in Chester Heights, state police say.