The bodies of Willabus, 33, his wife, Dianne, 32, and his sons, Padraic, 10, Damani, 5, and Deion, 3, were found Tuesday in their home at the Kenridge Apartments in central DeKalb. Investigators said it appeared they died at least two days earlier.

On Wednesday, autopsies showed that Ian Willabus carried out the shootings, said DeKalb police Lt. Pam Kunz.

Police had been called to the apartment in December because of "a verbal altercation," but an officer handled the incident with other mediation, Kunz said.

Dianne Willabus had told a friend she was afraid of her husband and that he had threatened to kill her and himself, the Atlanta Journal-Constitution said.

"She said she didn't want to tell [her family] because she didn't want them to be worried," Shalmeen McCutchen, 27, a former co-worker, told the newspaper.

She said the two were having marital problems. "She had found out he had cheated on her," McCutchen said.

Dianne Willabus, who worked as a front desk manager at the Hilton hotel in downtown Atlanta, moved into McCutchen's Snellville home for a few days, but eventually returned to her husband "because he told her he had bought a gun," McCutchen said.

McCutchen said Ian Willabus had shown up at his wife's job, threatening her, and had been escorted out by hotel security, the newspaper said.

Ian Willabus was a former GTV news anchor and announcer with the Guyana Broadcasting Corporation.

The three children had only moved to the United States last Christmas to live with Willabus.

They spent the holidays with relatives of Willabus' first wife, Michelle Pierre, before moving to Atlanta with their father and his second wife in early January.

Willabus, originally of Linden in Guyana, was at one time a communications student of the University of Guyana.

He was also a flight attendant with the now defunct Guyana Airways Corporation and had contributed to the Caribbean News Agency (CANA), also now closed.

He was also an Assistant Public Relations Officer with City Hall in Georgetown.

At the time of his death he was a freelance news writer with CNN in Atlanta.