"A Kurdish shepherd, Bassem Farman Mohammed, was killed by Iranian shelling of the border area that began at about 8:30 am (0530 GMT)," said Maqdid Aref Ahmed, mayor of the Haj Omran district of Arbil province.

Ahmed Hassan, health director in the town of Choman, confirmed the shepherd's death.

Iran also shelled villages in the Qalat Dizah district of Sulaimaniyah province, destroying homes and farms, mayor Hassan Abdullah said.

The shelling began about 6:00 am (0300 GMT) and was continuing more than four hours later, Abdullah said, adding that there were no immediate reports of casualties.

Abdullah said on Friday night that Iran had shelled villages in the same area for an hour beginning about 5:30 pm.

Iran's elite Revolutionary Guards said on Saturday that they had resumed operations against Kurdish rebels in northwestern Iran along the Iraqi border inflicting "heavy blows."

"This operation is aimed at clearing the infected northwestern border area and started from the Sardasht heights," the Guards' ground forces said in a statement carried by Iranian state media.

"Heavy blows have been inflicted."

The Guards said they had resumed their operations "after the terrorist PJAK (Party of Free Life of Kurdistan) group failed to take advantage of a month's grace period given to them during the holy month of Ramadan to retreat from the border area."

They said operations would "continue until the border areas are completely cleared and sustainable security has been established."

In July, Iran launched a major offensive against rebels of the PJAK, targeting their bases in Iraqi Kurdistan along the Iran-Iraq border, and shelling the area for weeks.

Fighters of the PJAK, which has ties with the Kurdistan Workers' Party (PKK) that has been battling Turkish forces since 1984, have clashed repeatedly with Iranian forces in the mountainous border region in recent years.

Human Rights Watch has charged that Iran may be deliberately targeting civilians in its campaign against the rebels.

"The evidence suggests that Turkey and Iran are not doing what they need to do to make sure their attacks have a minimum impact on civilians, and in the case of Iran, it is at least quite possibly deliberately targeting civilians," the New York-based watchdog's deputy Middle East director, Joe Stork, said on Friday.

In mid-August, Turkey resumed its own campaign of shelling and air raids against suspected rear-bases in northern Iraq of the PKK.

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