Police say 61-year-old Carmine Faino used a semiautomatic rifle to fatally shoot his neighbor, Lori Wasko, 57, in the driveway of her Pennsylvania home.

When state troopers Joseph Perechinsky and William Jenkins were tasked Thursday morning with checking on a call of shots fired at a home in rural northeastern Pennsylvania, they had no idea about the danger they were driving toward.

Both troopers were in stable condition, according to state police. An EMT was injured and two people were killed during the incident.