Here is the list of blasts in Mumbai since December 2002. December 2, 2002: Two persons were killed and 31 injured in a powerful explosion in a bus outside the crowded Ghatkopar railway station. The blast ripped through the bus damaging its rear portion. Banned Students Islamic Movement of India (SIMI) was suspected to be behind the blasts with police arresting more than six persons in this case.

December 6, 2002: Twenty-five persons were injured in a bomb blast at McDonalds fast food restaurant at Mumbai Central suburban railway station. The bomb was planted in the air-conditioned duct. It was suspected to be a crude bomb.
January 27, 2003: At least 30 persons were injured when a bomb planted on a bicycle went off throwing splinters of sharp nails outside Vile Parle railway station. The explosion occurred near a shopping complex in the evening hours. On the ill-fated day, all the shops in the area were closed for a weekly holiday. Later a woman succumbed to injuries.

March 13, 2003: A powerful bomb blast shattered a bogie of a local train at Mulund railway station in the peak hours killing 11 persons and injuring more than 65. This was the most powerful serial explosion.
Bureau Report