A 17-year-old boy from Vakola saw an ad about 110 per cent compensation for damaged or lost courier, and hatched a plan to make Rs 10 lakh. He packed “electronic gadgets” to be delivered to Delhi. However, the parcel had a bomb he made using firecrackers, batteries, a mobile phone and an electronic circuit, which exploded at Blue Dart’s godown in Jogeshwari.

He had timed the explosion for Tuesday night, expecting there would be a massive fire. But his plan failed. Police said the boy is a bright student and his father wanted him to become a doctor one day.