Viduthalai Chiruthaigal Katchi leader and MP Thol Thirumavalan and others were deported back to India from the international airport here.
"They have been deported upon their arrival," former TNA MP M K Sivajilingam told PTI. It was not clear who are the other two leaders.
"They (airport officials) didn't give any reasons for the deportation," he said.
Velupillai Parvathipillai (81), the mother of Prabhakaran, passed away on Feb 20, after prolonged illness at a government hospital in northern Sri Lanka.