Sammanthurai village is situated in the Sammanthurai Assistant Government Agent Division in the Amparai district. The village has large paddy fields. Ancient temples like the Kannaki Amman temple and the Kali temple are located in this village.
10.06.1990, Muslim groups with help from the Sri Lankan military attacked the people of this village. When the people attempted to escape by running away, the military opened fire at the people. 37 people were killed and many more were injured.