Officers in Stevenage have launched an appeal for witnesses and information following an assault in Queensway.

A man and woman were out walking their dog, towards The Towers, when a man they did not know engaged them in conversation.

As they passed him, the man allegedly became agitated and made threats towards their dog.

An altercation took place between the two men, with the dog owner receiving an injury to the back of the head.

The couple and their dog ran from the scene, heading in the direction of Vista Towers and the fire station.

A member of the public is believed to have intervened at this point and stopped the offender chasing the couple.

Investigating officer, PC Steven Hill said: "We are very keen to trace the member of the public who intervened and anyone else who may have witnessed the incident, or who may have been driving through the area with a dash cam in operation."

The incident occurred on Saturday 16 January, between 9.25pm and 9.45pm.

Anyone with any information is asked to contact PC Steven Hill via email to [email protected] or to call the non-emergency number 101, quoting crime reference 41/3989/21