NORFOLK, Virginia: Disgraced former 100-meter world record holder Tim Montgomery was sentenced to five years in prison here Friday after the former star admitted to distributing heroin last year.

The mandatory five-year sentence will be served on top of a four-year prison term the 33-year-old American had received in New York earlier for his role in a checking fraud conspiracy, the Virginian-Pilot reported.

Montgomery, who pleaded guilty in federal court last July to heroin distribution charges, apologised to the sentencing judge and his family, which includes a son Tim born to another disgraced US track star, Marion Jones.

US Drug Enforcement Administration agents said Montgomery sold 111 grams of heroin to an undercover informant for about 8,500 dollars, with four meetings between Montgomery and the informant video taped by the federal authorities.

Montgomery was sentenced to three years and 10 months last May for his role in the check fraud scheme after pleading guilty to conspiracy and bank fraud in April of last year. Montgomery set a world 100m record of 9.78 seconds in Paris in 2002 that was stricken from the books in 2005.

His admission of using a once-undetectable steroid in 2001 to BALCO investigators in 2003 was enough to see him stripped of his 2000 Sydney Olympic gold medal from the US 4x100m relay.