Police are appealing for information after three people, including a teenage girl, were struck by air weapon pellets in the last week.
The incidents happened in the Killinghall Roadm Bradford, on May 15 and 19. Police believe they are connected.
A 20-year-old man required hospital treatment following one of the incidents, between 2pm and 2.30pm on May 19, to have a pellet removed from his hand.
At around 1.45pm the same day, a 14-year-old girl was struck on the back of her thigh by a pellet. She did not require hospital treatment.
A similar incident occurred on the evening of Thursday, May 15, when a 13-year-old girl was hit on the arm as she walked along Killinghall Road at around 7.15pm.
Police have increased patrols in the area to offer reassurance to the public following these incidents, and are appealing for anyone with information to come forward.
Sergeant Jon Best, of the Bradford East Area Neighbourhood Team, said: “We are concerned about these incidents and are keen to find out who is responsible for them.
“Discharging an air weapon at a person is not only highly dangerous and could cause serious injuries, it is also a criminal offence and we will take action against anyone found to be using a firearm in this manner.
“Anyone with information is asked to call police on 101 or Crimestoppers on 0800 555111.”