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 charges against Maximilian Snyder mark the latest twist in the case against his romantic partner, Teresa Youngblut.

Prosecutors are arguing why a Washington state woman should remain jailed in connection with the death of a U.S. Border Patrol agent

Maximilian Snyder, who has been charged with killing a California landlord, applied for a marriage license last year with Teresa Youngblut, who has been charged in connection with the fatal shooting last week of a border patrol agent in Vermont.

Teresa Youngblut, 21, faces federal firearms charges in the Jan. 20 death of U.S. Border Patrol Agent David Maland, and police and court records have shed some light on connections to killings in othe

Here are four new details emerging in the bizarre and tragic shooting of U.S. Border Patrol Agent David "Chris" Maland in Vermont on Inauguration Day, including the killers' link to a "violent transgender commune.

Federal prosecutors say a Washington state woman charged in connection with the fatal shooting of U.S. border patrol agent in Vermont had been in frequent contact with someone whom authorities have linked to homicides in Pennsylvania and California.

The recent murder of an 82-year-old Vallejo man may be connected to the murder of a border patrol agent in Vermont and a double homicide in Pennsylvania.

Less than a week after a woman from Seattle was charged in connection to the fatal shooting of a U.S. border patrol agent in Vermont, a man from Seattle was arrested and charged with murder in Northern California — and it appears the two arrests are related.

Federal prosecutors said in a court filing that the investigation into a Border Patrol agent's shooting death has revealed a connection to Delaware County, Pa.

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.