Thonithiddamadu village is situated in the Vaharai Assistant Government Agent Division in the Batticaloa district. This is a Tamil majority village. The main economic activities of the villagers are farming and fishing. This village had nurtured and safeguarded its own ancient art forms and culture. This village is one of those villages in Batticaloa that is bounded by Sinhala villages. People went to the neighbouring Sinhala villages to purchase their daily needs.
On 25.05.1987, the Sri Lankan military opened fire in the Thonithiddamadu village. Frightened people kept to their homes.On 27.05.1987 at 2.00am at night, the military entered the village and shot and killed people who were asleep. Thirteen people were killed in this massacre.
