A jury on Thursday found Michael T. Burns guilty on all charges for killing a motorcyclist after running a red light at an intersection on July 26, 2016.

The jury’s unanimous decision concludes a three-day trial during which Burns’ degree of responsibility in the death of Dale T. Major was debated between Assistant District Attorney Ben Simon and defense attorney Al Lindsay.

Diane Burns, the defendant’s mother, comforted her weeping granddaughter as the jury read their decision, finding Burns guilty of all three charges: felony homicide by vehicle, misdemeanor involuntary manslaughter and reckless endangerment.

At the time of the accident Burns had been working as a truck driver for a company called Air Equipment Corp. Though he had only been with the company for two weeks, he had 15 years of experience as a rig driver.

Burns, 59 and from Houston, Pa., picked up an air compressor unit that weighed 18,000 pounds, compared to the 29,000-pound Sterling truck he had been given for the task. The truck was something of a clunker, according to multiple witnesses called to testify during the trial. One witness, Middlesex Township officer Conrad Pfeifer, testified on Wednesday that the Sterling truck was obviously unfit for the heavy-load task.

“It was very apparent that the brake system wasn’t working properly,” Pfeifer said, noting that investigators conducted tests on the truck after the accident. “It did not stop as soon as it should.”

Burns claimed on the stand that the truck had performed just fine when he first got behind the wheel. It was only later that he experienced a problem. After he picked up the compressor unit at a construction site south of Butler, he approached Route 8 along Glade Mill Road and began to slow down. But the brakes did not stop the truck and load from crashing through the intersection, killing Major on his motorcycle in the process.

Over the course of the trial Burns’ defense team argued that Burns was not to blame and questioned why authorities didn’t investigate his employer, since the company ultimately made the choice to assign Burns the Sterling truck and had tasked an unqualified mechanic to fix it two years before the accident.

“He’s the least responsible person in this case,” Lindsay said to the jury in his closing arguments.

As the trial came to a close Thursday, Simon argued to the jury and presented his view on what he thought happened the day of the crash.

“This was a preventable death and Mr. Burns didn’t do what he should’ve because he was in a rush,” Simon said.

He continued, “Mr. Burns was frustrated, cut corners, ignored red flags that were screaming of danger.”

After the trial, Lindsay marveled at the jury’s decision.

“I’m profoundly disappointed,” Lindsay said. “I don’t know how they could have reached this verdict.

“If you can get convicted of a felony on evidence like this, God help us all,” Lindsay said.

He noted that his team plans to file a post-sentencing motion to dispute the verdict. If that fails, then Lindsay plans to appeal the decision.

Judge William Shaffer scheduled Burns’ sentencing for Oct. 25.