A dog walker saw blood running along the ground in a lane where a dad was murdered, jurors have heard.
David Walsh, who was known as Boff, died as a result of multiple injuries and stab wounds after a savage beating in the back lane of Canon Cockin Street and Fuller Road in Hendon, Sunderland, last November.
The 45-year-old had gone to the lane after he heard one of his sons had been attacked.
A woman who had been walking her dog near the scene said she went to the lane "to see what all the commotion was" after she heard shouting.
She told jurors at Newcastle Crown Court: "There was a lot of shouting and screaming."
The witness told the court she saw two men lying on the ground in the back lane and people standing in the vicinity.
She added: "Two people were lying on the floor and blood was running down the back lane."
The walker said she went to a nearby house to call for an ambulance as a result of what she saw.
Raymond Brown, 37, of Canon Cockin Street, who was seen by a different witness to plunge a knife into Mr Walsh "26 to 27" times, has pleaded guilty to murder and violent disorder.
Charles Lamont, 40, of Vilette Road, his son Dalton Barnett, 19, of Fuller Road and Patrick Duggan, 19, of Palmstead Place, all Sunderland, all deny murder and violent disorder and are being tried by a jury.
The trial continues.