RIYADH (AFP)--Saudi forces have arrested 208 suspected militants who formed six cells, one of which plotted to attack a logistical oil facility, interior ministry spokesman General Mansur al-Turki said Wednesday.

"One of the cells was plotting to attack an auxiliary oil facility in the Eastern Province - a logistical facility, not an oil refinery," he told AFP.

Al-Turki didn't give details about the targeted installation, but said the suspects had been arrested over the past few months in various parts of Saudi Arabia.

He said another cell was plotting to smuggle rockets into the kingdom, which has been battling suspected Al-Qaida militants since they launched a spate of bombings and shootings in May 2003.