Chief U.N. war crimes prosecutor Carla del Ponte says Slobodan Milosevic secretly took medicines in his jail cell in what may have been a suicide attempt.

Del Ponte told France's Le Monde newspaper Tuesday that Milosevic apparently decided to worsen his health in an attempt to get out of jail and go to Moscow for treatment or to take his own life.

She said she is waiting for blood test results to see what brought on the heart attack that killed Milosevic.

Del Ponte said Milosevic's death is difficult to accept and that it dealt the war crimes tribunal a nasty blow.

But she said she wants to try fugitive former Bosnian Serb leaders Radovan Karadzic and Ratko Mladic, saying the court is now in a coma and must come back to life.

Some information for this report was provided by AP and Reuters.