Sgt. First Class Ricardo Santos, 45, committed the heinous slayings after stalking and harassing his ex of just three months, ...

Allison said Semanchik treaded carefully about whether to lodge a restraining order because Santos was a police officer while ...

Prosecutors in New Jersey say a state trooper killed his ex-girlfriend and her boyfriend, a volunteer firefighter, before ...

A New Jersey State Trooper -- once entrusted with protecting the governor -- gunned down his ex-girlfriend and her new ...

A New Jersey state policeman, who had previously been tasked with protecting the governor, shot and killed his ex-girlfriend ...

A memorial has been set up outside a New Jersey animal hospital for Lauren Semanchik, a veterinarian who was fatally shot in ...

A NJ State Trooper took his life after killing Pinewald Pioneer Firefighter Tyler Webb, 29, and Lauren Semanchik, a veternarian.

A New Jersey State Police sergeant, who once served on Gov. Phil Murphy's security detail, is suspected of killing his former girlfriend and the volunteer firefighter.

A New Jersey State Police sergeant fatally shot his ex-girlfriend and her boyfriend before killing himself, Hunterdon County ...

A New Jersey State Police sergeant followed his ex-girlfriend home from work, hid in the woods near her home, and fatally shot her and her new boyfriend before killing himself, authorities said.