A man in the US, who streamed a murder live on Facebook, has been found dead.

Pennsylvania State police say Steve Stephens was spotted this morning and a car chase ensued.

The 37 year-old had been on the run after killing an elderly man in Cleveland, Ohio and streaming it live on the social media site.

It's understood he took his own life.

The video, which circulated rapidly on social media, shows Stephens pulling over in a car as he says "find me somebody to kill, gonna kill this guy right here. He's an old dude".

He gets out and asks the man: "Do me a favour: can you say Joy Lane?"

"Joy Lane?" he asks.

"Yeah," says the killer. "She's the reason this is about to happen to you." He then asks him how old he is.

The man goes silent for a few seconds, before saying " Look, I don't know anybody by that name" - as he tries to shield himself with a bag.

A gunshot is heard and the camera pans over the pavement to show the man lifeless on the ground with a head wound.

Police named the victim as Robert Godwin Sr, 74.

The victim's son, Robert Godwin Jr, told Cleveland.com that following the incident: 

"I haven't watched the video. I haven't even looked at my cellphone or the news," he said. "I don't really want to see it."