Authorities fear a 49-year-old man whose body was found dumped by the roadside may be the 10th victim of a pair of female serial killers believed to be prowling the highways of Florida and Georgia.

The body of Daniel Mitchell Conger Jr. was found in Orange Springs Friday, after his car was found abandoned in Palatka. He had been shot at least once.Investigators in two states have been looking for the killer or killers of middle-aged male motorists whose bodies have been dumped along Florida and south Georgia highways over the past year.

Police distributed a description of two women - one a tall blonde, the other a short brunette - spotted at the scene of an accident involving the car belonging to a missing Jupiter missionary, Pete Siems, 65.

Two women were questioned in Jacksonville last week, but investigators concluded they had no connection to the slayings.