An ancient burial cave was discovered in the Philippine island of Mindanao, south of Manila, and officials have sealed the site to prevent looting of artifacts, many of them jars made from clay.

It was not immediately known whether there are other treasures in the cave which was accidentally discovered by quarry diggers yesterday in Maitum town in Sarangani province.

The latest discovery in the village of Pinol was near another ancient burial site discovered in 1991 where burial jars, shaped in different human forms, had been recovered inside Ayub cave.