The Punjab Police arrested Ramandeep Singh, alias Goldy, a top Khalistan Tiger Force operative who figures on the most wanted terrorist list, at the Chennai airport after he was brought there from Malaysia on Thursday.
He was nabbed in Malaysia through a joint operation by the local police and international and Indian counter-terror agencies.
Ramandeep is wanted in various terrorism cases, one being the assassination of Rashtriya Sikh Sangat chief Rulda Singh in 2009.