MOSCOW — U.S. and Russian special forces have raided drug labs in Afghanistan in an unprecedented collaborative military operation, the U.S. Embassy in Moscow said today, destroying what a Russian official said was $250 million worth of heroin and morphine.

Afghan forces also were involved in the raid on four laboratories near the Pakistan border, a U.S. Embassy spokesperson said on customary condition of anonymity.

Three of the labs produced heroin, while the fourth manufactured morphine for a long-established drugs route into Pakistan and beyond that had been worth an estimated $1 billion to the drug trade, RIA Novosti cited Russia's anti-narcotics chief Victor Ivanov as saying. Ivanov said up to 200 million doses of heroin were seized.

No date was given for the operation, news of which comes a week after Ivanov gave an interview to The Associated Press in Washington saying the U.S. has failed to dismantle heroin labs, despite specific information on the labs provided by Russia.