UN investigator in Iran for nuclear answers

Tehran: The UN nuclear watchdog's top investigator arrived in Tehran on Monday to press for answers about Iran's nuclear programme.

UN investigator Olli Heinone will be spending two days in Iran to find truth in western intelligence suggesting that Iran secretly studied how to design atomic bombs.

Heinonen is expected to meet Iran's deputy head of national security, Javad Vaeedi.

Iran has dismissed the intelligence as baseless but the International Atomic Energy Agency wants more explanations.