AGARTALA, June 11 (TIWN/IANS): The Border Security Force (BSF) arrested three Bangladeshi trained hardcore militants related to helping National Liberation Front of Tripura (NLFT), police said here on Thursday.

"The three NLFT extremists were nabbed by the BSF troopers when they were crossing Gobindabari frontier in Longtarai valley (in Tripura's Dhalai district) to enter the state," Inspector General of Police Nepal Das told IANS.

"The tribal guerillas, aged 20 to 23-year-olds, were caught when they were coming from a hideout in Bangladesh on Wednesday night," he added.

The ultras were later handed over to Chawmanu police station, where senior police and intelligence officials are interrogating them.

"The NLFT militants said that they fled from the Dhup Chara extremists' camp in Chittagong Hill Tracts (of southeast Bangladesh) few days back before entering into the Indian territory. More disgruntled rebels are keen to come to the normal life," another police official said quoting the apprehended ultras.

Two banned separatist groups - NLFT and All Tripura Tiger Force - have set up bases in Bangladesh and have been demanding secession of Tripura from India.