The first bomb went off at around 1:50 pm (10:20 GMT) in the Kermanshah governor's office. Two were hurt by the blast and windows were also broken, the report said.

A second bomb went off minutes later in another government office for commercial affairs.

Kermanshah is dominated by Iran's Kurdish minority, but it was not clear if there was an ethnic connection to the blasts. Iran's Kurdish region has been hit by a wave of unrest over the past year.

Further south, Iran's oil-rich Khuzestan province has also been hit by a wave of bombings linked to ethnic Arab separatists.