The shooter killed his neighbor before ambushing two responding state troopers, one of whom has now been discharged.

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

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.