A man wanted on a mental health warrant and armed with a machete was Tasered five times and hit with several bean bag rounds during a more than two-hour standoff Saturday at his vehicle in Butler, authorities said.

Douglas B. Spink, 46, of Butler was finally arrested — but not before members of the state police Special Emergency Response Team were called in to help.

Butler police said Spink bit the hand of one of the assisting troopers, who ended up going to the hospital for treatment.

Spink also ended up at Butler Memorial Hospital for a psychiatric evaluation. Details about the involuntary mental health warrant were not immediately known.

City police later charged him with aggravated assault, resisting arrest and disorderly conduct in connection with the standoff that unfolded in an alley between Fulton and Pearl streets.

A 911 call shortly after 9 a.m. led officers to the defendant, whose GMC Yukon had gotten stuck, according to court documents. Spink was apparently sleeping in the back of the vehicle.

On Friday, police said, the crisis intervention center had advised police of the warrant for Spink.

While police spoke to Spink, another man came by and dropped off the defendant's service dog, which had run off the previous night.

Officers allowed the dog to get into the vehicle with Spink as they explained to him the warrant process.

“He became adamant that he would not leave his dog,” Butler Deputy Chief David Adam said Monday, “and that he would kill it before he would let anyone take it away from him.”

Spink refused to come out of the vehicle despite police commands, and he eventually climbed into the front seat.

“He reached down on the floor and pulled up a machete,” Adam said, “and raised it above his head.”

Police Sgt. Dave Villotti ordered Spink to drop the machete. The officer deployed his Taser when the defendant, who had gotten out of the vehicle, kept hold of the large knife.

The Taser did not seem to have much effect. Patrolman Marc Howard fired his Taser.

But this time, police said, the defendant dove back into the vehicle, grabbed his dog and placed the machete to the dog's neck.

Officers called Butler Township Police and state police for assistance. Among those to respond were state police negotiator Cpl. Gregory Bogan and CERT members.

Bogan and Villotti took turns talking to Spink for nearly two hours, Adam said.

At one point, he allegedly dropped the machete but picked up a smaller knife, which he held against the dog's neck.

Authorities, hoping to peacefully resolve the ordeal, got permission from Butler Ambulance Service medics and Butler Memorial Hospital officials to allow Spink to bring his dog to the hospital.

Still, however, he refused to cooperate.

But apparently after the defendant momentarily fell asleep, police called for the dog, which exited the vehicle.

A minute or so later, Spink began to shout and also left the vehicle. Police told him to get on both knees. He went down on one knee before abruptly standing up.

City police Chief Ron Brown deployed his Taser “with little effect,” Adam said.

When he ran through a group of officers apparently to try and get his dog, police said, SERT members shot him with two bean bag rounds.

Bean bag rounds are classified as “less lethal” ammunition that can be shot from a shotgun or rifle.

Police said he ran at Villotti before he was hit with two more Tasers and two more bean bags.

While being arrested, police said, he bit a trooper's right hand. The officer was taken to the hospital but the injury was believed to be minor.

This was not Spink's first violent confrontation with police. In 2016, he fought with Zelienople police at a convenience store after authorities said he fired a gun at his mother's house in Harmony.

He ultimately pleaded guilty to reduced charges of reckless endangerment, resisting arrest and criminal mischief, court records showed, and served about 10 months in the county prison. He was placed on two years' probation following his release.