Security has been stepped up across India’s commercial capital Bombay (Mumbai) after 11 people were killed in a bomb explosion on a commuter train. More than 50 others were injured by the blast, which hit a carriage reserved for women passengers. It is not yet clear who carried out the attack but police have linked it to a bomb blast in a Bombay suburb three months ago. This is the fourth bomb blast in Bombay in recent months and comes 10 years after the city was hit by serial bombings. Railway stations, airports and other vulnerable areas in the city have come under a security blanket and police check-points are in place elsewhere. Full Story