ST. TAMMANY PARISH, La. (WKRC) - A 12-foot-long alligator that authorities believe attacked and killed a 71-year-old man in Hurricane Ida floodwaters was captured and killed on Monday.

The alligator weighed "a startling 504 pounds," according to the St. Tammany Parish Sheriff's Office, and was found to have human remains in its stomach.

The sheriff's office is working to determine if the remains belong to Timothy Satterlee, who has been missing since August 30.

A woman called to report that she witnessed a large alligator attacking her husband. She said she was able to stop the attack, but his injuries were already severe.

When she returned from trying to seek help about a mile away from their home, her husband was gone.

After law enforcement agencies were unable to locate Satterlee, alligator hunters set a trap for the animal.

It was captured Monday morning with the help of wildlife agents, search and rescue agents, cadaver dogs, and the licensed hunters.

"This is a horrible tragedy and my sincere condolences and sympathy goes to the Satterlee family," St. Tammany Sheriff Randy Smith said. "I know today's findings does not bring their loved one back, but hopefully this can bring them some sort of closure. I am very proud of the hard, non-stop work, of my deputies and the other agencies who assisted, and I hope their persistence in finding this alligator will help the family with coping with their loss."