As the gunman was fleeing the scene, a bystander armed with a pistol confronted the shooter and fatally shot him outside the restaurant, Oklahoma City Police Captain Bo Mathews told reporters.
Ron "Spinozi" Benton, 54, an Oklahoma City radio show host on WWLS, was at Louie's on Thursday night sitting at the bar when he heard popping sounds and saw a crowd of people take cover and head for the exits.
Police say the three people wounded by gunfire are a 39-year-old woman and two juvenile girls.
Just after 7 p.m. CDT, police said there was no longer an active threat in the area.
Dennis Will said his daughter and granddaughter were among those shot. The victims are expected to survive.
The shooting could have continued if it weren't for two men who ran out to their vehicles and grabbed handguns locked in their trunks, Mathews said.
Jennifer Stong hugs Tasha Hunt outside the scene of a shooting on the east side of Lake Hefner in Oklahoma City on May 24.
"Thankfully the only person that is deceased is the person who was trying to harm others, and it looks like others are going to survive at this point".
Matthews said the police "have no records of anybody making any other reports" on Tilghman in their system, though he did have a record of a 2003 arrest for domestic assault and battery from when he was 13 years old.
Oklahoma City police said it had identified a "large number of witnesses" at the restaurant.
Morgan said a group of Good Samaritans immediately rushed to take care of the victims before paramedics arrived.
"We are extremely thankful the situation didn't escalate further, and that injuries were not more widespread". Louie's Lakeside will be closed on Friday, May 25, 2018.
The police are investigating the incident.
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