A dad cooling off with his family alongside a kiddie pool was killed when a public transit bus jumped the curb and slammed into him on the lawn of a Philadelphia home, according to news reports.

The out-of-control SEPTA bus ran a red light Thursday night, plowed into two cars, jumped a curb and careened into the yard of a Frankford Avenue home in North Philadelphia — where James Derbyshire, 52, was relaxing, ABC 6 reported. The bus finally came to a rest after it slammed into a home, the station reported.

“It hit [Derbyshire] so hard, it knocked him through the wall,” neighbor Karl Dollmann told ABC. “He had no pulse; I checked it. He had no pulse.”

Another witness, Michelle Woods, told NBC that “there was no bringing him back.”

“He was pretty mangled,” she said. “He had a broken neck and his leg was severed.”

A 20-year-old woman standing next to the pool and a 28-year-old man who managed to jump out in the nick of time had to be rescued from under a fence and were hospitalized for pain, NBC 10 reported.

“For some reason the bus went through a red light, striking two vehicles,” Philadelphia Police Chief Inspector Scott Small told ABC. “Then the bus crossed over Frankford Avenue, jumped over the curb and that’s when it went on the front lawn, hitting three people and killing one.”

The 49-year-old driver, who was in stable condition, appeared to be in a state of shock, one witness told ABC.

“He was crying,” the witness said. “He didn’t know what to do.”

It wasn’t clear why he lost control of the bus, which had 16 passengers on it at the time.

“[My daughter] said they got on the bus [and] he seemed fine,” Malitza Breban, whose daughter and grandchildren were on the bus, told the station. “It just happened so fast, the bus just went straight.”

The bus driver, the drivers of the two cars struck by the bus and two bus passengers were hospitalized for non-life-threatening injuries, according to the station.