At least two locals were killed when suicide bombers attacked the US and Israeli embassies in the Uzbekistan capital Tashkent on Friday, according to reports.

A third blast hit the general prosecutor's office, Russian news agency Interfax said.

A man with an explosive belt on his waist detonated a bomb outside the American embassy and Uzbek security forces surrounded the compound, stopping all traffic, it said.

Israel's ambassador, Tzvi Cohen, said there was a blast at his embassy but "it's still not clear if it was an explosive device or a suicide bomber".

He said the two dead were local Uzbek workers.