Her ex-husband C.J. Hunter says he saw Jones injecting herself with drugs at the residence they shared in Australia.
IOC set up a disciplinary commission to investigate allegations made against US sprinter Marion Jones by BALCO chief Victor Conte.
World Athletics added that her efforts in advancing the sport in India as well as inspiring more women to follow in her footsteps make her "more than a worthy recipient" of this year's award.
Written off before the championships started on Saturday, Montgomery belied his recent form with impressive performances in the opening rounds of the 100m
The World record holder failed to make the US 100 metres team for next month's Olympics.
The 100 metres record holder received a letter from the U.S. Anti-Doping Agency alleging doping violations.
Marion Jones and Tim Montgomery should be free to compete in the Olympic Games since the drug allegations against them are not proven, IOC president Jacques Rogge said.
U.S. anti-doping officials presented the Olympic champion with copies of an annotated ledger and calendar they believe may be a schedule of her steroid use.
The American sprinter wants any samples obtained from the BALCO investigation to be tested for DNA first to ensure they belong to her.
Jones also lost to the Bahamian in the Dutch town of Hengelo on Sunday.
Marion Jones's lawyer welcomed U.S. Justice Department's decision to hand over documents to a Senate committee of their investigation into the illegal sale and use of steroids among top athletes.
Former Olympic champion Marion Jones can return to the sprinting elite, says ex-hurdler Jeff Howser who is assisting with her coaching.
The American ace is likely to compete in only the long jump and 4x100 metres relay in Athens.
Both athletes are involved in the ongoing doping investigations.
Jones, who is expecting her first child with Tim Montgomery in July, has already outlined her plans to return to competition next year.
Triple Olympic champion Marion Jones made a shock departure when she walked off the track just before her preliminary race of the women's 100 metres.
Jones's lawyer Joseph Burton had accused the USADA and the U.S. Olympic Committee (USOC) of creating a "witch-hunt."
Pfaff had coached Canada's Donovan Bailey to the 100-metre world record in 1996.
Olympic champion Maurice Greene believes that the triple Olympic champion Jones gets her acceleration too early.
The Ethiopian broke the 5,000 metres indoor world record at a Grand Prix meeting held at Birmingham.