TEHRAN - A suicide bomber blew himself up near the shrine of Iran's revolutionary founder, Ayatollah Ruhollah Khomeini, in Tehran on Saturday, Iran's semi-official Mehr news agency reported.

'A few minutes ago a suicide bomber blew himself up at the shrine,' Mehr quoted a police official, Hossein Sajedinia, as saying.

Two other people were wounded in the incident in the northern wing of the shrine, another news agency, Fars, said

Elsewhere in Tehran Iranian riot police used teargas to disperse demonstrators protesting against a disputed presidential election, a witness said.

Iran's English-language Press TV said police used teargas to disperse demonstrators at Tehran's Enghelab square.

'Police also used water canon to disperse the demonstrators,' state television said.