Fugitive businessman Mehul Choksi, who was arrested in connection with the PNB bank scam case, received yet another setback on Tuesday as a court in Belgium adjourned the hearing on his plea challenging his arrest.

The Belgian Police took custody of Choksi, the second "prime suspect" in the Rs 13,000-crore PNB loan fraud case on April 12 in Antwerp, based on an extradition request made by the CBI and the Enforcement Directorate (ED).

This was the second plea by Mehul Choksi who, in his fresh plea, claimed that the process undertaken for his arrest was arbitrary and unlawful. His earlier plea seeking bail was rejected by the court last week.

The next date for the hearing has not yet been notified.

On April 22, a court in Belgium turned down his request for bail. In his first plea, Mehul Choksi told the court that he was unwell and wished to be with his family. He said he was ready to accept any conditions, including wearing a GPS-enabled anklet if needed.

Meanwhile, India said it is working closely with Belgium for the extradition of Choksi.

"Based on our extradition request, he was arrested. We are working closely with the Belgium side on his extradition so that he can face trial in the country," External Affairs Ministry spokesperson Randhir Jaiswal said.

Choksi is accused of defrauding Punjab National Bank of over Rs 6,095 crore through a massive banking scam involving the fraudulent issuance of Letters of Undertaking (LLOUS and the manipulation of Foreign Letters of Credit (FLCS).

Though the broader estimated fraud is pegged at over Rs 13,000 crore, investigative agencies have specifically built a case against Choksi based on the Rs 6,095 crore component linked directly to his operations.