A man was left with a sore face after an unknown liquid was thrown at him as he walked his dogs along a Northampton street.
The man was walking along St Leonards Road in Far Cotton at about 11.25pm on Friday, August 22 when two cars full of people shouting abuse at pedestrians passed him.
As one of the vehicles passed, the man felt a liquid hit him in the face and an immediate stinging sensation.
He was left with a sore face, but no lasting injuries. It is not yet known what the liquid was.
It is believed the car which drove past the man was an N registration Rover, which was either black or blue.
Officers investigating the case would like to speak to anyone who was in the area at the time and may have seen the incident.
Witnesses, or anyone with any information, can call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555111.