June 1: Ujjwala and Shekhar come to give blood samples but Tiwari backtracks.
Sept 23: Justice Geeta Mittal says Tiwari's refusal is unjustified and malafide but he cannot be compelled to give blood sample.
Apr 27, 2012: Shekhar challenges the order before division bench of HC comprising acting Chief Justice AK Sikri and Justice Rajiv Sahai Endlaw which sets aside the single-judge order.
Apr 27: Tiwari asked to comply with court order and on refusal, blood sample to be taken with police help.
May 1: Supreme Court refuses to entertain Tiwari's appeal and directs him to comply with its earlier order.