A Texoma man was arraigned Monday morning in Wichita County court.
Judge Judy Baker addressed the suspect via video conference. She said, "Ryan you've been charged with murder. That is a felony, first degree."
Ryan Civiletto, 23, is accused of shooting and killing Edward Luna, 45, Sunday night at a 7-11 in Burkburnett.
Newschannel 6 obtained the arrest affidavit and it describes an active scene. There was a large crowd gathered. Civiletto was still at the scene, as was Luna - still alive but clutching his chest and groaning.
Detective Royce Challis of the Burkburnett police department said, "Our officers arrived on scene, and located one male suffering from a gunshot wound to the chest."
Police called paramedics who took Luna to United Regional Hospital where he later died.
Police said Civiletto approached them at the scene, and told them Luna had attacked him, so he shot him.
Detective Challis says one of the many 9-1-1 calls from the 7-11 came from Civiletto.
"He actually called he was one of the ones who called 911 and informed our 911 dispatcher that he had been the one who fired the shot."
Police said Civiletto continued to cooperate. He told officers his gun was in his truck. Upon searching the vehicle, they found a .40 caliber pistol.
At his arraignment Monday morning, Judge Judy Baker read the suspect his rights and discussed representation.
"Do you want to go ahead and ask for a state appointed attorney at this moment and then if you can get one you can tell them you don't need one?
Civiletto's answer was a simple, "Yes Ma'am".
The suspect is being held on $500,000 bail. Police said they have multiple cooperating witnesses, but they would not disclose if the witnesses were associated with the victim or the suspect.