United Liberation Front of Asom (ULFA) leader Anup Chetia — deported by Bangladesh on Wednesday — was sent on a six-day Central Bureau of Investigation (CBI) transit remand on Thursday, said sources in the agency in New Delhi.

"Chetia has been booked by the CBI in a 1988 murder case in Assam," a source told IANS.

The CBI registered the case at the request of the Assam and Central governments.

Bangladesh Rifles handed over ULFA general secretary Chetia to the Border Security Force at Dawki — a border centre between India and Bangladesh — in Meghalaya on Wednesday. He was later flown to Delhi by the CBI.

Chetia was arrested from his plush apartment in North Adabar in Dhaka in 1997 for illegally entering Bangladesh and illegally carrying foreign currency and a satellite phone. He was tried and sent to jail.