An eyewitness at Jharsuguda said one Railway Protection Force (RPF) constable chased Saikia when he found him fleeing, but his efforts proved futile.

Saikia was being brought to the city on transit remand. Based on his interrogation in Chhattisgarh, Sujoy Das alias Bubai Bangali was nabbed Saturday from neighbouring North 24 Pargana district's Dum Dum area.

Of the eight Marmosets stolen from the Alipore Zoological Gardens, seven were recovered alive from Bhilai in Durg district of Chhattisgarh, while one died of exhaustion while being transported 900 km from Kolkata.

The seven monkeys have been brought to the zoo by the same train.

Alipore zoo director Raju Das told mediapersons that the monkeys will be kept under observation for a few days. 'We will see whether they have any ailment or show abnormal behaviour. If they are found ok, then they will again be on display for the public.'