A taxi driver was attacked by a group of youths who threw a stone at his car window before punching and kicking him.
He had gotten out of the vehicle after the stone cracked the windscreen of his vehicle and police say a large group of youths attacked him and left him with a large gash above his eye.
The incident happened at around 9.15pm on Ovenden Way in Calderdale on Wednesday. West Yorkshire Police said it was the latest in a spate of incidents involving stones being thrown at taxi drivers especially around the Illingworth and Ovenden areas.
Sgt Darren Bedford, of Calderdale Police, said: "This incident resulted in a man receiving a minor injury, but it could have easily had more serious consequences.
"Throwing stones or any objects at cars is highly dangerous and it could led to an incident or collision resulting in serious injury or worse.
"We have increased patrols in the area and we are in the process of identifying the suspects. We also have spoken to other taxi drivers who have suffered similar attacks.
"I would urge anyone who is targeted in this way to report the incidents to the police as soon as you can, and provide us with as much information as possible to help identify the perpetrators.
"I would also ask if drivers have seen these attacks being carried out and have dashcam footage of the incidents, to please get in touch."
Witnesses or anyone with information is asked to contact Calderdale Police on 101 or Crimestoppers on 0800 555 111.