Police have identified Wess Roley as the sniper who allegedly set fire to a wooded area in Idaho to lure firefighters before opening fire and killing two of them.

Roley, 20, was found dead by police after they engaged him in a shootout on Sunday afternoon. Police confirmed to the Associated Press that he was responsible for the attack, which the local sheriff described as a “total ambush.”

The firefight occurred on Canfield Mountain, a popular hiking spot in Coeur d’Alene. Police have not revealed how Roley died or what his motivation was.

Roley’s grandfather, Dale Roley, told CNN that he had a “loving family and friends” and hoped to one day fight fires himself.

“He wanted to be a fireman—he was doing tree work and he wanted to be a fireman in the forest,” Roley said to the broadcaster. “As far as I know, he was actually pursuing it.”

The elder Roley stated that he spoke with his grandson weekly until a month ago, when he allegedly lost his phone.

“It wasn’t like he was a loner,” the grandfather told CNN. “We had no reason to suspect that he would be involved in something like this.” Despite the police’s claims, he remains optimistic that his grandson was not the shooter.

In a Sunday news conference, police explained that Roley intentionally started a wildfire on the mountain to draw first responders to the location where he was perched with a rifle. He then allegedly fired on the firefighters, killing two and leaving a third “fighting for his life.”

Other firefighters fled the scene and requested assistance from the sheriff’s office, which sent officers on foot and two helicopters to the mountain. A recording of firefighters’ pleas captured some of the chaos, including one man yelling over the radio that he was “pinned down.”

“Send law enforcement, send law enforcement right now, this is an active shooter zone,” he repeated. “Everyone is shot up here. Law enforcement, call code three right now!”

Kootenai County Sheriff Bob Norris stated that firefighters had no idea what they would find in the woods.

“We do believe that the suspect started the fire, and we do believe that it was an ambush and it was intentional,” according to him. “These firefighters did not have a chance.”

Norris said the third firefighter was critically injured but stable as of Sunday evening.

Roley does not have a social media presence under his name. According to records, he is from Phoenix, Arizona, but his father lives in Idaho, about an hour north of where the shooting occurred on Sunday. His father told CNN that he wasn’t close to his son and hadn’t seen him since a family gathering last year. The father’s public Facebook page does not include any photos of Roley.