A woman was assaulted on a bus in Corby last night.
The 23-year-old woman was assaulted by a man as the number 3 bus travelled from Corby town centre to the Kingswood estate between 6.20pm and 7pm.
The man then dragged the woman off the bus when it stopped in Dunedin Road.
The victim sustained a head injury as a result of the assault.
Police would like to speak to the other passengers who were on the bus last night and who witnessed the assault.
Call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555 111 or use the anonymous online form.
A 31-year-old man has been arrested in connection with the incident.