LARGO, Fla. (AP) — A teacher drowning in debt fatally shot his ex-wife and her roommate Friday, and police found two dead children at his house, authorities said. The body of an apparent suicide victim was found later in his van.

Police said it was not clear whether the body found in the van was that of the teacher, Oliver Thomas Bernsdorff, but Manatee County sheriff's spokesman Dave Bristow said investigators have "reason to believe the person is connected" to the other four deaths.

Bernsdorff, 36, fatally shot his ex-wife, 27-year-old Jennifer Davis, and her 53-year-old roommate, Andrea H. Pisanello, in their Largo apartment Friday morning, Largo police Lt. Mike Loux said.

Police investigating those shootings identified Bernsdorff as a suspect and sent officers to his house in nearby Clearwater, about 20 miles west of Tampa. They found the children's bodies around 11 a.m., Clearwater police said.

Police did not release the children's identities, but Bernsdorff's Web pages said he was the single father of two children, ages 2 and 4, that he had with Davis. The victims were described as a boy and a girl found in a bedroom. Their causes of death were not released.