POLK COUNTY, Fla. – Polk County authorities are investigating a double homicide, officials said.

According to investigators, two badly decomposed bodies were discovered Friday night in an area near Haines City after a tip was submitted to officials.

Raymond Mark Cline, 33, and Crystal Ann Cline, 37, were found in a wooded area behind their home on Windy Hill Road, officials said.

According to Polk County officials, the married couple had been deceased for some time.

“It appeared that they had been shot and their bodies dumped in the swampy area,” authorities said.

Detectives have arrested three people in connection with the homicides, officials said.

Amberlyn Nicole Nichols, 19, and Larry James Waters, Jr., 19, are being held on charges of accessory after the fact and failing to report a death. Officials said they are expected to have their first appearance Sunday morning.

Detectives were still searching Saturday for a third suspect, Todd Michael Jackson, 34.

“Todd Jackson shot the two victims in the head as they slept at the crime scene,” officials said.

Detectives arrested Jackson near his last known place of residence in the Wabash area of Lakeland on Saturday evening, officials said. He was taken into custody without incident.

Officials said Jackson is being charged with two counts of first-degree murder. He was expected to be booked into the Polk County Jail later Saturday night and had his first court appearance Sunday.

Jackson is being held on no bond.