Detectives are still trying to determine what led to the separate slayings of three people who were killed within a 24-hour period.

The identity of a man whose nude body was found floating in the Jordan River remained a mystery Saturday.The victim is described as an Asian man in his 20s. The body, found about 11 a.m. Thursday by a Salt Lake Housing Authority employee, had been in the water for up to two days, Lt. Norm Thompson said.

An autopsy indicated the unidentified victim died either from strangulation or drowning, Thompson said.

Four hours earlier, the body of a 17-year-old girl who apparently was sexually assaulted and then strangled was found near an office building in Salt Lake County.

Felicia Pappas, 4652 S. Seventh East, was last seen leaving a pool hall at 2865 S. State in South Salt Lake, about 1 a.m., sheriff's detectives said.

Her body, nude from the waist down, was found at 7 a.m. behind a brick building at 45th South and Sixth East, according to a sheriff's report.

The sheriff's office logged the 15th Salt Lake County homicide of the year early Friday. The body of Darrell N. Webber, 39, was found about 3:20 a.m. behind a paint store at 4070 S. State, a report said. He had been stabbed once in the chest.