A man suspected of killing a pensioner and then posting the video on Facebook has been found dead after a police chase. Pennsylvania State Police confirmed Steve Stephens shot and killed himself after a brief pursuit this morning.

The 37-year-old had been on the run over the death of Robert Godwin Sr, who he was seen approaching in a shaky video. The pensioner, 74, was holding a bag of shopping which he tried to shield his face with as Stephens blasted him. Footage of the killing was on Facebook for about three hours before it was removed.

In a separate confession video posted on Facebook, Stephens claimed to have killed more than a dozen other people. Police had urged people in five states to be aware as a huge manhunt is underway to find him.