HENDERSON, Nev. — Documents show police were looking for prescription medication when they searched a doctor's house and office in the investigation into the death of LPGA golfer Erica Blasberg.

Dr. Thomas Hess referred calls Tuesday about the May 13 searches at his home and business to his lawyer, who declined comment.

Henderson police aren't saying much about their investigation of the 25-year-old Blasberg's death May 9 at her home in Henderson.

Police say a 911 call came from the house, and that Blasberg was alone when officers arrived.

Warrant documents show police were looking for alprazolam, an anti-anxiety medication also known as Xanax, plus samples of Hess' handwriting.

The Clark County coroner says it could be four more weeks before a cause of death is known.