The truck driver starts to get out of his truck, but bystanders who have rushed to the victim’s aid wave him back inside to reverse the wheel off the victim, who is writhing in pain.
Watch the surveillance footage below, courtesy of KGUN9 in Tuscon, Arizona.
Police officials told Los Angeles news stations that the victim was left in critical condition, suffering broken bones and a collapsed lung.
ABC7 reported that firefighters saw the station's report on the attack that evening. They recognized the suspect a short time later by his jacket.
"It was definitely the bright neon rain jacket and the baggy pants, and just the demeanor the guy had," one firefighter, Austen Johnson, told ABC7.
The firefighters called police and the man, who was described as combative, was taken into custody. He did not have identification on him, the news station said.
The Los Angeles Police Department’s central division announced the arrest on social media.
“Earlier, @ABC7 aired a clip of an individual pushing a passerby underneath a panel truck,” the post read. “Thanks to our partners @LAFD he is now in custody. Alert fire fighters observed him walking in the #DTLA area and called for us to respond, where he was arrested.”
He is expected to be charged with attempted murder, police officials told ABC7.