The groups also protested at Keppapilavu in the former northern battle zone of Puthukudyiruppu, which had been held for nearly two weeks by the Sri Lanka Airforce, and demanded immediate release of the land.
"The situation in Keppapilavu is indicative of the Sri Lankan government's misleading campaign and slow progress on releasing lands from military occupation," the release said.
Keppapilavu became a model resettlement village in 2012, three years after the military victory over the separatist LTTE.
Although the current government has released some of the lands previously held for military purposes, the Tamils complain of slow progress on the releases.
"With the government's moves towards reforms stalling, there is serous concerns that land returns and demilitarisation - core demands of Tamil people - are not moving head sufficiently," the statement added.
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