Rohit Shekhar Tiwari's lawyer wife Apoorva Shukla Tiwari, arrested in connection with his murder, was sent to two-day police custody by a Delhi court on Wednesday.
Chief Metropolitan Magistrate Deepak Sherawat allowed interrogation of Apoorva Shukla Tiwari after the police sought her 3-day custody.
The judge also directed that the accused will be medically examined as per rules and allowed her lawyer to be present with her during interrogation and serve a copy of FIR.
The police told the court that they want to find out more clues related to this case and ruled out the possibility of any other suspect.
The lawyer appearing for Apoorva Shukla Tiwari opposed the plea for custody saying that she has cooperated throughout the investigation.
Earlier in the day, police had arrested her on charges of his Rohit Shekhar Tiwari's murder, citing a "turbulent and unhappy" marriage as the motive.
Rohit Shekhar Tiwari, the son of the late veteran politician ND Tiwari, was smothered to death on the intervening night of April 15 and 16, an autopsy report said.
Apoorva Shukla Tiwari, a lawyer practising in the Supreme Court, was being questioned in connection with the killing since last Sunday.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.