Rajya Sabha MP Kapil Sibal on Monday raised a series of questions over the killing of Atiq Ahmad and his brother, asking why they were being taken for a medical checkup by police at 10 pm when there was no emergency and why it was "open to the media".

Gangster-turned-politician Ahmad and his brother Ashraf, both in handcuffs, were shot dead by three men posing as journalists on Saturday night when they were answering reporters` queries while being escorted by police personnel to a medical college in Prayagraj for a checkup.