Question: why nupur talwar murdered aarushi?
Answer: After ruling out the family's ex-servants, the police considered Aarushi's parents—Dr. Rajesh Talwar and Nupur Talwar—as the prime suspects. ... Based on the 'narco' interrogation conducted on the three men, the CBI assumed that they had killed Aarushi after an attempted sexual assault, and Hemraj for being a witness.