The killings of a Border Patrol agent in Vermont last week, a state’s witness in California, and a pair of senior citizens in Pennsylvania all appear to be linked to a fringe group of West Coast vegan activists and artificial intelligence theorists.

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 Delaware County, state police say.

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.

Prosecutors say the Washington state woman charged in the killing of a Border Patrol agent in Vermont was in contact with homicide suspect.

A double murder of Richard and Rita Zajko in December 2022 has been linked to the fatal shooting of a Border Patrol Agent in Vermont.

As the sprawling investigation unfolds, here’s an overview of the key figures involved and their alleged connections.

A man accused of murder in California appears to have sought a marriage license with a woman charged in connection with the fatal shooting of a U.S. Border Patrol agent in Vermont

A Washington state woman was ordered held without bail Thursday in connection with the death of a U.S. Border Patrol agent in a case that has grown to encompass killings in multiple states. Teresa Youngblut,

Maximilian Snyder and the woman accused of killing a Border Patrol agent in Vermont applied for a wedding license in Washington state in November, records show.