A crowd filmed a stabbing victim bleeding to death on the street and blocked other residents from helping him, witnesses claim.
The victim, 25, who hasn't been named, was knifed in Erdington, Birmingham, on Monday afternoon.
Police and paramedics scrambled to Chudleigh Road at around 4.15pm but despite rushing the man to hospital he died a short time later.
An 18-year-old man was arrested in Erdington on suspicion of murder.
Witnesses told of their "utter disgust" after ghoulish onlookers filmed the man bleeding to death as he lay on the ground.
One resident said: "There was what looked like a fight but when the man went down he was surrounded by people pointing their phones at him."
They added: "My neighbour desperately tried to help him but couldn't get through the crowd.
"It is utterly disgusting behaviour, where is people's decency?"
Another told Birmingham Live that he was "disgusted" after seeing people huddled around the man with their phones out.
He said: "I just don't understand the mentality of people with their phones out gathered around him. Let the ambulance through. Every second counts."
A cordon remains in place near the junction of Reservoir Road while officers conduct a fingertip search of the murder scene.
Detective Inspector Wes Martin, of West Midlands Police, said: "A young man has tragically lost his life and we're doing all we can to support his family at this awful time.
"We've made some quick progress by arresting a suspect on suspicion of murder.
"However, we remain keen to hear from anyone who may have information. Anyone who may be able to help us needs to contact us.
"We're reviewing all CCTV possibilities and we're asking people in the area to check any dashcam or doorbell footage which can help us fully establish what has happened during this terrible incident."