Mumbai, April 14 -- Absconding diamond merchant and key accused in Punjab National Bank scam case Mehul Choksi, who was arrested in Belgium after India made an extradition request, will file a bail plea in the appropriate court of a European nation, his lawyer said here in Mumbai on Monday. . The accused is suffering from cancer and undergoing treatment, said Choksi's lawyer, Vijay Aggarwal. "We are in the process of filing an appeal against his arrest in Belgium. Our appeal seeking his release on bail will mainly be on the ground that his medical condition is not stable, and he is undergoing treatment for cancer," he said. "We will also be arguing that the diamantaire is not a flight risk," he further said, adding that the case can come up...