Four people were killed Thursday in an apparent homicide-suicide case in Calhoun County, Alabama, when a man fatally shot his son, daughter and her fiancé before taking his own life.

“We received a call to 911 and the man said he’d killed some people and that he was going to kill himself,” Calhoun County Sheriff Matthew Wade said. The suspect was identified as Tony Parker. 

Calhoun County Coroner Pat Brown identified the victims as 19-year-old Heather Parker and 20-year-old Brandon Roberts. The 12-year-old boy who was also killed was not named.

Describing what happened when deputies arrived at Parker's residence, Wade said: “When the deputy got there he found three bodies in the front yard, none of which were the man that called. We pulled the coordinates of the origin of the 911 call and traced it back to the Rabbittown store.”

Deputies found Parker with an apparent self-inflicted gunshot wound at the store, 3 miles from the home at the corner of Rabbittown Road and Red Road 55, the sheriff said.

According to the Calhoun County coroner, Parker's children didn't live with him on a regular basis and it was unclear why they were at the residence at the time of the incident. Authorities have launched an investigation into the triple homicide-suicide case and are trying to find the reason why Parker killed the three people and later himself.

“That’s part of the ongoing investigation,” Brown said. “Why they were there.” He also said the bodies of the four people will be sent to Huntsville for autopsies.

The children's mother was not in the state when the incident took place.

"Working hard to find answers to give to the family as to why this occurred," Wade said. "This is definitely devastating to the family and to us as well. It's very distributing and we will be praying for them."