Ai Iijima found dead

“there were few signs of foul play”….what does that mean? there are either signs of foul play or no signs of foul play.

At about 3:30 p.m. on December 24, 2008 (JST), Iijima was found dead in her 21st floor Tokyo apartment not far from Shibuya Crossing.[2][15] Police are currently investigating her death as her fully-clothed body was found lying face down on the floor when medics forced their way into her place. She had been dead for about 7 days, police said. Some of her show business friends told reporters that Ai suffered recently from bouts of melancholia and depression, and they believe her death was accidental — perhaps adult-onset heart attack. She once told reporters she was taking medication for a “mild neurosis.” Through this and other occasional entries on her blog, “Porno Hospital,” she kept fans up to date on her life and business dealings. She is said to have been planning to start a new business focused on selling condoms to women. She wrote extensively about a World Aids Day event in Tochigi Prefecture on December 6. On March 3 2007, Sports Nippon reported that Ai Iijima was suffering from hay fever, pyelitis (ascending urinary tract infection that has reached the pyelum (pelvis) of the kidney), cystitis and acute backache. She had written in her blog that she had kidney problems and inflammation of the urinary tract and bladder, and there were also persistent rumors that she was an HIV carrier, although it had never developed into full-blown AIDS. (red.wikipedia)