Steve Stephens was accused of shooting Robert Godwin Sr on a Cleveland sidewalk on Sunday before fleeing in a auto and uploading a video of the murder to Facebook, becoming the subject of a nationwide manhunt.
Stephens posted a video of himself killing Godwin, a former foundry worker and a father of 10.
Facebook co-founder and CEO Mark Zuckerberg spoke about the murder at the site's annual developers conference Tuesday. Despite initial reports, Facebook denies that it was broadcast live on its platform, claiming that Stephens uploaded the video after the shooting. He said he "just snapped".
In an interview with CNN, Stephens' mother said he told her he shot the man because he was "mad with his girlfriend".
"I'm not happy he's dead at all, not at all". She said they remained friends after their breakup and she wanted to get him help for his gambling problem.
Authorities say they pursued Stephens for about two miles and attempted to disable his vehicle using a PIT maneuver.
In interviews before Stephens' death, Godwin's relatives said they forgave his killer.
On Monday evening, Facebook announced that it was launching a review for reporting harmful content following the killing. "This is something that should not have been shared around the world, period", Williams said.
Earlier in the day, police said tips were pouring in as police continued their manhunt.
The man known as the "Facebook killer" may have been taken down by a group of McDonald's employees in Erie, Pennsylvania, authorities said Tuesday.
Stephens was wanted in five states for the murder of Robert Godwin, 74, on Easter Sunday in Cleveland.
The FBI has now joined in the hunt, offering a $50,000 reward for any information leading to Stephens' arrest.