The victim, a 32-year-old man, was at the junction of East Street and South Street at about 5.30am today (19/8) when he was approached by an unknown man.
The offender then attacked the victim with a knife, slashing his left forearm.
Investigating officer, PC Daniel Surridge of the response team based at Reading police station, said: “This was an unprovoked attack on the victim who defended himself and sustained a slash to his left forearm, which required stitches. Thankfully, the victim has been discharged from hospital and is now recovering at home.
“The offender is a white man described as in his mid twenties.
“I understand this offence will be concerning to local residents but I am reassuring the community that we are conducting a thorough investigation, including tracing CCTV and a searching the scene.
“If anyone saw or heard anything unusual in the vicinity of East Street and South Street in the early hours of this morning, or if you have any information about the incident, please contact the police. Please visit your nearest police station or call 101 and quote reference 43170246366.
“If you do not want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court.”