Sagarika Chakraborty, a well-known Indian actress, is married to Rajeev Khandelwal, a popular television and film actor. There is no information suggesting that anything has happened to Rajeev Khandelwal. He remains active in the entertainment industry and is known for his roles in television shows like "Kahiin To Hoga" and films like "Aamir".
It's likely that the question refers to a misunderstanding or misinformation. Rajeev Khandelwal is alive and well, and there are no reports of any incidents or events that would suggest otherwise.