Iran's Revolutionary Guard soldiers have killed at least 30 members of Kurdish opposition group in fighting near the Iraqi border, a senior military official said on Monday.
On Monday, Iranian state TV showed forces of the Iranian Revolutionary Guard Corps operating weaponry in the mountain area, outside the border city of Sardasht.
The rebels say they are fighting for greater rights for their minority community, the Iranian Kurds.
Iran's Revolutionary Guard announced a new military offensive intended to drive Party for a Free Life in Kurdistan, commonly referred to as PEJAK, from positions in Iran last week, saying it resumed military operations after the expiration of a one-month deadline it had set for the group to leave the border region.
Iran has publicly accused the president of Iraq's semi-autonomous Kurdish region, Massoud Barzani, of providing bases to PEJAK without informing the central Iraqi government in Baghdad.
Iran has also accused the US, Britain and Israel of seeking to incite tension on Iran's borders to undermine the government in Tehran, charges those three countries have denied.