Afghan authorities said they had seized dozens of Iranian and Chinese-made weapons after a brief battle Saturday with Taliban fighters near the border with Iran.

The weapons found in the western province of Herat included about 40 mines and rocket-propelled grenades, the government's intelligence agency said in a statement.

They were found in a vehicle that Taliban fighters abandoned following an exchange of fire in the province's Ghoryan district on the Iranian border, it said.

"The weapons were seized after Taliban escaped and left one of their vehicles behind with the weapons," it said.

An intelligence official told AFP separately and on condition of anonymity that the arms appeared to have been manufactured in Iran and China.

Some of the rockets showed to reporters carried Persian writing and the coat of arms of Iran, which reads "Allah."

US and British officials have alleged that the Taliban are being supplied by weapons that arrive from Iran, although not necessarily from Tehran, which denies involvement.

Comment: That is important to keep in mind, namely that the Iranian government might not have anything to do with it, if indeed Iranian weapons have been seized. Weapons dealers and smugglers care little about which country the weapons were produced in, as long as it satisfies the demands of the buyers. It is also quite possible that certain intelligence agencies play the role of arms traders and choose Iranian weapons specifically for the propaganda value in it when seized later by their colleagues.

A sizeable convoy carrying explosives was seized early this month by NATO troops in the western province of Farah, which also borders Iran, the top NATO general here, General Dan McNeill, said last week.

"The geographic origin of that convoy was clearly Iran but take note that I did not say it's the Iranian government," the US general told AFP.

Officials with NATO's International Security Assistance Force told the Washington Post the weapons stash included armour-piercing bombs, which have been especially deadly when used against foreign troops in Iraq.

The NATO-led force interdicted two smaller shipments of similar weapons from Iran into southern Helmand province on April 11 and May 3, the Post said.

US Deputy Secretary of State John Negroponte reiterated last week concern about weapons from Iran supplying the Taliban and said Washington was also discouraging China from selling arms to that country.