Kenyan security forces have launched a manhunt for al-Shabab militants behind the abduction of two Kenyans in Liboi area along the Kenya-Somalia border.

Garissa County police commander Alfred Angengo said the two men, Abdullahi Issack Harun and Abdi Hassan Ilkaase, who were kidnapped by about 20 al-Shabab militants on Dec. 26, were found and taken to Liboi police station on Sunday.

He said only three militants had boarded the vehicle in which the two men were traveling in and proceeded with the captives to neighboring Somalia.

"Only three of the al-Shabab militia proceeded with the captives to Somalia at a place called Bagdad, 60 km from Hosingo, to the east where they have established a camp and hosted black flag," Angengo said in a statement.

The two men appeared in good health though tired, he said.

The two were ferrying miraa (khat) to Liboi when they were ambushed by al-Shabab militants and taken to Somalia, Angengo said.

He said security forces will conduct operations along the border areas to flush out militants believed to be planning to stage attacks in the region.

The abduction came two weeks after militants ambushed a Garissa-bound commuter bus and killed 11 people, including eight police officers.