Hundreds of security personnel along with pro-government tribesmen have searched hundreds of houses since Monday in Shakai valley but found no militants or weapons, a security official said.

A military statement overnight said unidentified men fired several rockets at a military post in Razmak near Shakai but caused no casualties or damage.

This was the first attack on security forces since a missile strike killed pro-Taliban militant leader Nek Mohammad last week near Wana, the main town in South Waziristan tribal territory.

Mohammad's seven associates including three foreigners were also killed in the missile attack last Thursday.

He was accused of sheltering hundreds of Chechen and Uzbek fighters around Wana when they fled the US-led offensive to destroy the Taliban in the wake of the September 11, 2001, attacks in the United States.