The interrogation of underworld gangster Kumar Pillai, who was extradited to India from Singapore last month, has not helped Mumbai Police arrest other criminals or solve more cases. The police had hoped that Pillai’s interrogation would help uncover his role in cases that were not yet on record and also lead to the arrests of his Mumbai-based accomplices. Pillai, whose police custody ended on July 15, is currently lodged in Taloja Central Prison. An officer said that they interrogated him for over two weeks after seeking his custody three times in connection with the three FIRs registered against him in the city. Several times, in cases of extortion, the complainant does not come forward to register a complaint, an officer said. They expected that his interrogation would also help them find such cases in which he was involved. They also expected to identify his accomplices in the city and arrest them. “No new cases or arrests were made based on his interrogation,” said a senior IPS officer. “Based on his interrogation, we are in the process of gathering evidence and will file a chargesheet against him in three cases,” added the officer. Another officer pointed out that they had to be careful during the interrogation of Pillai as he was an extradited accused. “There are certain conditions which are laid out in extradition cases before a country eventually agrees to extradite a person to another country.” Watch Video: What's making news A Bachelor of Science student in geology at Somaiyya College, Pillai entered the underworld in the ‘90s after he murdered a local corporator to avenge his father’s death. While on the run, Pillai became close to the Amar Naik gang and started making extortion calls to builders in the eastern suburbs of Mumbai. Having fled the country in the late ‘90s, he was first detained in Singapore four months ago, after which the process of extradition began. He was brought to Mumbai on June 28.