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NORMAN, Okla. – A standoff at a Norman hotel and casino came to a tragic end overnight.

Around 10 p.m. Monday, Riverwind Hotel and Casino was evacuated after an armed man locked himself in his hotel room. Police were called to the hotel after the man started sending family members messages, saying goodbye.

Police say the evacuation was done out of an abundance of caution.

Negotiators tried to communicate with the man in an attempt to get him to surrender peacefully.

A couple of hours later, police heard a single gunshot.

When officers entered the room, they found a man dead with a single gunshot wound.

Now, investigators are working to determine what may have caused the man to take his life.

Officials told KFOR that the man was 62-year-old Edmond resident named Carl Jack Hopkins.