New Delhi: Ousted AIADMK leader T.T.V. Dinakaran has been brought back to Delhi for further questioning in connection with the Election Commission bribery case. The Delhi Police questioned several men suspected to have been linked to the money trail in the case. The Crime Branch also grilled some others who allegedly had knowledge about the money transaction. Earlier, a Delhi Court sent alleged middleman Sukesh Chandrashekhar to judicial custody till May 12 and Hawala operator Naresh Jain in connection with a bribery case to police remand till April 30. Dinakaran's house was searched and an informal interrogation was done with his wife, Joint Commissioner of Delhi Police said.