Mumbai, July 14 -- A 19-year-old pillion rider died after being run over by a dumper in a hit-and-run case on Sion-Panvel highway in Mankhurd on Saturday morning. He and his friend, who was riding the bike, were on their way to Raigad on a trekking trip arranged by their college. As they were late to register for the trek, the seats in the bus were filled up and they had to go on their bike, the police said. The deceased, Hasan Amirullah Idrisi, was a third year student of Bachelor of Science at Sree Narayana Guru College of Commerce in Chembur. According to the police, the accident occurred on Saturday at 6.30 am when Idrisi's college friend, Ashraf Anwar Shaikh, 20, picked him up from his home in Baiganwadi and started towards Raigad. "Shaikh and Idrisi were late to register for the trek. So the seats in the bus were filled up and they had to go on their bike. Shaikh was driving," said a police officer and added that when they halted at a petrol pump in Mankhurd, they found a few of their college friends who were also on their way to Raigad on their bikes. "A dumper came from beside us and hit our bike. The dumper's tyre ran over Idrisi's head and stomach," said Shaikh. They were rushed to Rajawadi hospital in Ghatkopar where Idrisi was declared dead, the officer said and added, "Their friends followed and intercepted the dumper. The driver left the dumper there and fled." The unidentified driver has been booked for rash driving....