Dumdum, Jan 10 (ANI): Atleast three people were injured after a crude bomb placed inside a Tiffin box exploded on Saturday near Dumdum Cantonment railway station on the outskirts of Kolkata. According to media reports, the blast took place near platform number 2, where a Tiffin box with a circuit was found. Few cans with explosives have also been found. According to initial reports, the injured were rag-pickers who were sifting through the garbage dump when the bomb went off. Further details are still awaited.