It took just a couple of days for the railway police to decide that 14-year-old Mohammed Khan had died in an accident, that a train ran him over while he was taking selfies on the track. But, it took two whole years for his father, Shabbir Khan, 47, to prove that the teenager had been murdered in cold blood by a bunch of kids who wanted his new phone.

It cost Shabbir two years of his life and his job — he had quit so he could investigate what had happened to his son — but he has finally got justice by bringing his son's killers to book. The Vasai Road Government Railway Police (GRP) is expected to charge four minors for the 2016 murder, after Shabbir managed to prove that they had pushed his son before a speeding train. Three of the boys are 15 years old, and the fourth is 16.