LAFAYETTE, Ga. —  Authorities have charged the husband of missing Georgia 911 dispatcher Theresa Parker with murder in her death.

Authorities arrested Samuel Parker, 52, at 9:55 a.m. Monday at his home, said Walker County Sheriff Steve Wilson.

The Georgia Bureau of Investigation and the FBI assisted his deputies in making the arrest, Wilson said.

Theresa Walker, a dispatcher for Walker County, was last seen the night of March 21, 2007. Authorities had called her estranged husband a person of interest in her disappearance.

Sam Parker, a former Lafayette Police officer, had maintained his innocence.

The couple was in the process of getting a divorce when the woman disappeared.