<span style="color: #222222;">A special court in Delhi has extended by seven days the Enforcement Directorate's custody of alleged middleman Christian Michel, arrested in the Agusta Westland VVIP chopper case. </span><br />'' <br />'' <span style="color: #222222;">The  ED  told the court that Michel was misusing the liberty of legal assistance during his interrogation by passing chits to his lawyers asking how to tackle questions on Congress leader Sonia Gandhi.</span><br />'' <span style="color: #222222;">  </span><br />'' <span style="color: #222222;">The ED said that his custodial interrogation was necessary to unearth the larger conspiracy in the case. </span><br />'' <br />'' <span style="color: #222222;">Michel was extradited from Dubai recently and was arrested by the Enforcement Directorate on December 22. </span><br />'' <br />'' <span style="color: #222222;">He was sent to seven days custody of the agency over money laundering charges in the scam.Earlier, he was lodged in Tihar Jail in the related CBI case.</span><br />''