A man convicted of killing his grandmother decades ago ambushed firefighters on Monday, fatally shooting two of them as they arrived to battle a blaze in upstate New York, police said.
Two other volunteer firefighters were wounded in the attack in the Rochester-area town of Webster. A police officer from the nearby town of Greece suffered minor shrapnel wounds when his vehicle was hit by gunfire.
Investigators believe the suspect, William Spengler, 62, set the original fire, then likely set himself up on a berm with a clear view of the scene and started shooting.
"It appears that it was a trap," Webster Police Chief Gerald Pickering said. "There was a car and a house that were involved in flames, probably set by Mr. Spengler, who laid in wait in armament and then shot the first responders."
Authorities do not know how Spengler -- who was found dead of a self-inflicted gunshot wound hours after the four firefighters were shot -- obtained the weapon or weapons he used or why he opened fire, Pickering told reporters. As a convicted felon, Spengler was not allowed to legally possess weapons, but he had "several different types of weapons" Monday, the police chief said.
Spengler was convicted in 1981 of first-degree manslaughter in the death of his grandmother and had been released on supervised parole, Pickering said.
He is believed to have lived in the home where the original fire erupted with his sister, who has not yet been accounted for, Pickering said. Their mother died sometime in the past year, the chief added.
In chilling audio heard over the scanner, a West Webster Fire Department firefighter reported "multiple firemen shot" -- including himself, with wounds to his lower back and lower leg -- and "shots still being fired."
"I'm pretty sure that we have two DOAs" -- the term for dead on arrival -- "on the street," the wounded firefighter said. "... They're down and not good."
For several hours after that Monday, the threat of gunfire stopped firefighters from battling the blaze and forced police SWAT teams to evacuate 33 people in the neighborhood of small, waterfront homes.
Eventually, seven houses were "totally destroyed" by the fire. Although the fires were under control as of 2:30 p.m. ET, by then authorities still hadn't been able to get in any of the homes. Pickering said it's possible more victims could be inside.
"I'm hoping that everyone was able to escape from the inferno," he said. "Those houses were close together."
With 'raging inferno' and gunfire, scene described as 'chaos'
Firefighters first arrived at the Webster fire before 6 a.m., said Rob Boutillier, the town's fire marshal.
By then, Spengler had set up himself somewhere above the scene in a "natural hollow, a position of cover to actually be a sniper," Pickering explained.
The calls from firefighter came in soon after, reporting that four of them had been shot. Police officers rushed to the scene, and one of the first ones there exchanged fire, "in all likelihood, (saving) many lives," according to the police chief.
"When we get there, we have people down, we have raging fires, and we have gunshots going off," Pickering said.
"It's chaos. It's chaos."
Authorities worked quickly to set up a perimeter, trying to contain the situation and the shooter. Neighborhood residents were first told to "shelter in place" because the gunman was at large, but some left their homes because of the fire.
Several people could be seen running. Police tracked some of them down, found they were neighbors seeking safety and escorted them out. Eventually, residents were whisked from the area in armored personnel carriers. All the while, there was "this raging inferno, with black smoke everywhere," Pickering said.