NEW DELHI: The Crime Branch of

is close to cracking the mystery behind the death of Rohit Shekhar, the son of former UP and

chief minister and

ex-governor

. The probe is around two possible motives behind his murder. While property is being seen as the most plausible explanation, Rohit's friendship with a woman is also being seen as a trigger to the crime.

On Sunday, Rohit's wife, Apoorva, was termed one of the

. She was questioned multiple times on Saturday and Sunday. She confessed to having gone to his room at night, but gave conflicting answers to its purpose.

A senior officer said that the role of others present in the house has been almost ruled out. A probe is on to find out if there was an accomplice to the killer. On Sunday noon, Apoorva complained of uneasiness during questioning and was taken to a hospital for check-up.

Meanwhile, Rohit's mother, Ujjwala, alleged that Apoorva got into a disagreement with Rohit after he and Siddharth decided to give a part of their property to one

, the son of their cousin Rajeev who used to work for Tiwari when he was the UP and Uttarakhand CM. "Apoorva wanted the property at Tilak Lane since it is at a prime location in Lutyens' Delhi and near Supreme Court, where she worked. She had accused Rohit of having an affair with Rajeev's wife on the second day of their wedding and got into frequent arguments over this," Ujjwala said.