Police and prosecutors on Friday sought credit card, taxi and airline records to trace Kennedy family movements the weekend of an alleged rape at the Kennedy estate.

The travel and spending records were sought as part of the rape case and an investigation into possible obstruction of justice after a 29-year-old woman charged she was sexually assaulted by a member of the Kennedy clan.The Palm Beach County state attorney's office has subpoenaed rec-ords from American Express, Yellow Cab, an employment agency and a Palm Beach nightspot, police confirmed Friday.

Police have asked for airline computer records to determine whether William Kennedy Smith, charged with sexual battery, Florida's equivalent to rape, changed his flight plans after police began investigating the March 30 incident.

The obstruction of justice investigation will focus on police claims they were misled when they went to the estate and asked to speak to U.S. Sen. Edward Kennedy, Smith's uncle.