Anthony Shea, an 18-year veteran of the sheriff’s office, resigned from his post as sergeant in August in the middle of an investigation into accusations that would have resulted in his firing, according to the sheriff’s office and an arrest affidavit.

Eloilda Shea, a 39-year-old Lt. at the Orange County Sherrif's Office, was allegedly murdered by her estranged husband, former Sgt. Anthony Shea, 49, on Friday.

Orange County Sheriff's investigators said the case was initially thought to be a suicide that happened on Monday.