The Portuguese Supreme Court has cancelled the extradition of alleged mobster Abu Salem to India but the Central Bureau of Investigation (CBI) said it would challenge the verdict.

Salem had contended before the Portuguese court that his extradition should be cancelled as the conditions for this had not been met. However, this plea "has been rejected by the Supreme Court. Therefore, CBI is on a secure wicket," CBI spokesperson Dharini Mishra said.

She said the agency would approach the external affairs ministry on filing an appeal in Portugal's Supreme Court challenging the decision.

Abu Salem and his girlfriend Monica Bedi, who were living in Portugal under a fake identities, were extradited to India in 2005. Salem face charges in various cases, including that relating to the 1993 Mumbai blasts.