<br/>The Delhi High Court today sought response from veteran Congress leader N D Tiwari on why DNA test should not be conducted on him to ascertain the allegation made by a man claiming to be his biological son. Justice J R Midha also directed the 83-year old politician to file a specific response on each photograph in which Tiwari is seen with the young man Rohit Shekhar and his mother. Giving a deadline of four weeks to file response, the Court said that Tiwari will have to personally appear before it in case he fails to file a written reply.<br/><br/> The court passed the order on a paternity suit filed by Shekhar, grandson of a former Union minister, claiming that he was born out of a relationship between his mother Ujjwala Sharma and Tiwari, a charge denied by the Congress leader. Earlier, the High Court dismissed the plea of Tiwari who sought dismissal of the petition on the ground that it was filed 31 years after the petitioner was born in order to malign his character.