UPDATE 4/22/18 12:30 p.m. ET: James Shaw Jr., 29, is credited as the customer that stopped the gunman in a Tennessee Waffle House on Sunday morning, according to KHOU. He found an opportunity to tackle the suspect, disarming the shooting and saving numerous other lives. “I don’t really know, when everyone said that, it feels selfish,” Shaw Jr. said. “I was just trying to get myself out. I saw the opportunity and pretty much took it.”

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Nashville police are searching for a seminude gunman who killed four people and wounded four others at a local Waffle House early Sunday morning, according to CBS News and CNN. The suspect was naked, except for a green jacket, when he began firing on the establishment around 3 a.m., according to police.

"Keep your doors locked, keep your eyes open. If you see this individual—if you see a nude guy walking around this morning—call the police department immediately," Metro Nashville police spokesman Don Aaron said, per CNN.

Their suspect is 29-year-old Travis Reinking from Morton, Illinois. Authorities say the vehicle the gunman pulled up to Waffle House in was registered to Reinking, and that he walked away from the crime scene nude.

One customer managed to overpower the shooter and take his weapon. "The man who wrestled the gun away is a hero," Aaron said.

Police are asking the public to stay alert for the assailant, who they suspect may have put on black pants.

"A man believed to be Travis Reinking was last seen in a wood line near Discovery at Mountain View Apts. on Mountain Springs Drive near the Waffle House," police tweeted. "The man was seen wearing black pants and no shirt."