The police chief says several people are being investigated for possible obstruction of justice in the alleged rape at the Kennedy family estate. But he declined to name any names.

"It's more than one. There are several people we're still looking at," Police Chief Joseph Terlizzese said in an interview Thursday. Police hope to conclude their investigation next week, Terlizzese said.He refused to say if any Kennedy family members who gave statements to police during the rape investigation, including Sen. Ted Kennedy, were suspects in the investigation.

The senator's nephew, William Kennedy Smith, was charged May 9 with second-degree sexual battery, Florida's equivalent of rape, and misdemeanor battery.

A 29-year-old woman told police Smith tackled and raped her at the family's seaside estate after the two walked on the beach in the early morning hours of March 30.

Smith, a 30-year-old medical student at Georgetown University, has denied any wrongdoing. He is free on $10,000 bail.

Kennedy, who was eventually interviewed by police, did not immediately return phone calls from officers and left Palm Beach two days after the alleged rape without talking to the police.

He blamed the delay in talking to officers on "miscommunication" and "semantic misunderstanding," saying he didn't know initially that police were investigating his nephew for rape.