MUMBAI, July 12 -- 60-year-old Vasai resident died and his seven-year-old grandson was seriously injured after their two-wheeler was hit by a speeding bike in Suncity on Wednesday. The motorcyclist who hit their two-wheeler was drunk, said a police officer. According to the police, the incident occurred at 5 pm on Wednesday when the senior citizen, Chandrakant Khakham, was taking his grandson, Dhruv Singh, to a garden in Vasai. When they reached Suncity Road, a speeding bike hit their two-wheeler, causing serious injuries to Khakham, Singh, the motorcyclist, and his pillion rider. The passersby alerted the police and rushed them to Balaji Hospital in Vasai, where Khakham was declared dead. His grandson sustained injuries on his leg, and the motorcyclist and his pillion rider are undergoing treatment in the same hospital, said a police officer. The police have registered a case against the motorcyclist for rash and negligent driving....