Transcript for Facebook Live killer kills himself after spotted by police
We're also following major developments today in the national manhunt for the suspect who authorities say posted his killing on Facebook authorities put out the alert after Steve Stephens allegedly argue targeted this elderly man on the street. And what kept him at the drive-through longer. Alex Perez with how this ended. Reporter: Tonight, the nationwide manhunt for Steve Stephens coming to an end. Just after 11:00 A.M., police get a tip from an employee at McDonald's in Erie, Pennsylvania. Stephens ordered chicken McNuggets and fries. The employee tried to stall him. Told him it was going to be a minute for fries. He didn't want to wait, headed back out on to Buffalo road. Reporter: The place on his tail, the chase lasting two miles. Then cops performing a so-called pit maneuver to stop his car. At that time, Stephens used a handgun to take his own life. Reporter: The suspect now dead, all after he posted this chilling video to Facebook sh showing steps showing Stephens approaching 74-year-old Robert Godwin and shooting him. Listen to me. He's laying there. What's your address? Oh, lord have mercy. Oh, my god. Reporter: The video was on Facebook for more than two hours before it was removed. We have a lot of work, and will keep doing all we can to stop tragedies like this from happening. Reporter: Tonight, for his partner, no relief. He's gone. Difficult for that family. Alex, we heard Mark Zuckerberg say, we have a lot to do. Facebook relies on users to notice and then alert them? Reporter: That's right. They do, and one of the things Facebook wants to do now is develop technology to flag videos much faster. Thank you.
This transcript has been automatically generated and may not be 100% accurate.