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.

A Washington state woman who federal authorities say was involved in a shootout that killed a U.S. Border Patrol agent last week has been ordered held in custody while her criminal case remains pending.

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.