Shivani Agarwal, the mother of a teenager involved in a Porsche car accident in Pune, has been arrested. The teenager was involved in a late-night crash that resulted in the deaths of two 24-year-old techies. Agarwal is accused of tampering with evidence by swapping her blood sample with her son's at Sassoon Hospital to mask the alcohol content in his blood. The police had been searching for her after discovering the swap and have now taken her into custody. She is expected to be produced before the court today. Pune Police Commissioner Amitesh Kumar confirmed the arrest.