During the 1870s, taking advantage of a new uprising against Norodom's authority, Si Votha swiftly returned to Cambodia from Thailand. Begging the pardon of the king of Siam for his unauthorized departure, Si Votha left Bangkok, swiftly passed through Battambang, and travelled onward to the higher region of the Mekong. He had little difficulty in quickly raising a large band of supporters and began to harry the officials loyal to King Norodom. He besieged the provincial capital at Kampong Thom and went through the turbulent province of Kampong Svai. Forces dispatched under Norodom's orders failed to apprehend him. As late as 1876, Si Votha remained in revolt, striking at an outpost of Norodom's government, and slipping back to his sanctuary among the Stiengs, one of the tribal groups on the fringes of Cambodian society.