An Iranian official says cigarettes smuggled into Iran have been tainted with pig blood and nuclear material as part of a Western conspiracy.

The semiofficial Mehr news agency quotes Mohammad Reza Madani from the Society for Fighting Smoking as saying contraband Marlboros have been contaminated with pig hemoglobin and unspecified nuclear material.

Madani claims Philip Morris International, which sells Marlboro outside the US, is "led by Zionists" and deliberately exports tainted cigarettes.

He provided no evidence or information about the confiscated cigarettes.

Friday's report also gave no details on how the contamination was discovered.

Tehran, which often alleges Western conspiracies, says 20 billion cigarettes are smuggled into Iran every year.