new delhi delhi police have made some crucial recoveries in the amar singh phone tapping case at the instance of key accused vijay dhawan following which a city court on friday granted two more days time for his custodial interrogationpolice told the court they have seized some sim cards blank papers with fake signs and trace papers using which dhawan allegedly forged the letters of principal secretary home r narayanswami and joint commissioner of police crime ranjit narayan to get sanction for tapping the samajwadi party leaders phonethe special cell said the crucial recoveries which might help them crack the case were made on thursday night from a house at vishnu garden in west delhi where the accused took them during questioningafter considering the sensitive nature of the matter and the recoveries i am of the opinion that further custodial interrogation of the accused is required additional chief metropolitan magistrate kanwaljeet arora said extending dhawans police remand to january 22