Four people including a police officer have been injured after a driver involved in a Sydney car crash allegedly stabbed his passenger before lashing out at witnesses who tried to help and the attending officer. Multiple calls were made to triple zero on Sunday after a two-vehicle crash at the intersection of the Princes Highway and Old Bush Road in Engadine at about 9am, New South Wales police said in a statement. “Officers … arrived to find a man – who appeared to be suffering stab wounds – allegedly running from the crash scene. He was taken into custody with the deployment of a Taser,” a spokesperson said. A male police officer suffered a serious laceration to his left wrist during the arrest, the force said. A woman – understood to be a passenger in one of the crashed vehicles – was found suffering multiple wounds. A fourth person was also injured, NSW police said. “It’s unclear at this time what that person’s involvement is in this incident.” All four people were treated by NSW Ambulance paramedics. The Cronulla Sharks chairman, Steve Mace, was driving his young son to football when they saw the crash. Mace told News Corp Australia he ran to one of the cars to check if those inside were injured after he heard screams. “I heard the guy screaming in the driver’s [seat] and then I heard his partner screaming even louder … I tried to open the [passenger] door and finally jammed it open,” he said. “I saw him [allegedly] slashing her … I tried to drag her out of the car to stop the stabbing.” Mace said he saw wounds to her neck, chest, stomach and legs. He said he later attempted to protect the woman from the alleged attacker by putting her back into the car. Another onlooker who tried to help was also stabbed, Mace claimed. The Sharks chairman said the alleged attacker shouted: “We’re all dead anyway.” The driver was also allegedly angry the woman had “changed the radio station on him”. A video captured by another passerby published by the ABC showed the alleged attacker running along the footpath and being chased by the police officer. The NSW police minister, Yasmin Catley, said there was no ongoing risk to the community. “That investigation is under way [and] I’ve been advised that the person of interest has been arrested,” she told reporters. “There is no threat to the community. I want the community to know there is no threat whatsoever.” The Princes Highway was closed in both directions and drivers were urged to avoid the area.