“I don’t know who did this, ma’am.”

That was what Daniel Walden Attaway of Marietta told a 911 dispatcher regarding his father’s death last month, according to tapes obtained by Channel 2 Action News.

“Somebody has entered my house when I was away and they shot my father. He is dead,” he also told the dispatcher, according to the tapes.

Police, however, believe Attaway killed his father.

He is being held without bond in the Cobb County Jail on felony murder and other charges in connection with the Sept. 29 death of Douglas Wayne Attaway, 59, once a construction vice president.

MORE: Hearing set in Cobb 'execution-style' murder case

Attaway shot his father “between his eyes” and “close to his forehead” in the basement of their house on Hardage Farm Drive in Marietta, according to the Cobb County arrest warrant.

“Said accused committed an execution style murder against said victim as he shot said victim between his eyes close to said victim's forehead,” the warrant read.

Police found holes in Attaway’s story about a home invasion, Channel 2 reported. They said they know of no motive and that evidence likely will play out in court.

In other news:

One victim said he fought back.