The blast at a packed restaurant in the western city of Pune, which left nine dead on Saturday including one foreigner, was the first major attack on Indian soil since the 2008 Mumbai massacre.
Here is a chronology of attacks against major Indian cities or sensitive locations since 2003:
March: Eleven people killed in a bomb attack aboard a commuter train in Mumbai.
August: Six people killed in two car bomb blasts in Mumbai.
October: Three powerful bombs explode in busy New Delhi markets a day before an annual Hindu festival, killing 62 shoppers and leaving hundreds injured.
March: Blasts in a train station and a temple in Varanasi, Hinduism's holiest city, leave 20 people dead, mostly devotees.
July: A series of seven high-powered blasts on suburban trains in India's business capital Mumbai kill 187 commuters and leave 800 injured. The attacks prompt India to freeze peace talks with Pakistan.
September: Thirty-eight people killed and more than 100 injured in three nearly simultaneous blasts, including one in a mosque, in the town of Malegaon in Maharashtra state.
February: Attackers fire-bomb the Pakistan-bound Friendship Express passenger train, killing 66 passengers, mostly Pakistanis.
May: Eleven killed, 15 injured in blast at 17th century Mecca mosque in Hyderabad. Five more die when police fire at Muslim protesters.
August: At least 40 people killed and more than 50 others injured as two bombs rock a crowded outdoor auditorium and a popular eatery in the southern city of Hyderabad.
October: Two die in a low-intensity explosion in the Ajmer Sharif shrine during Ramadan in the northern town of Ajmer. The Islamic shrine is equally popular among Hindus and Muslims of India and Pakistan.
November: At least 13 people die in bombings outside court buildings in three cities in the north state of Uttar Pradesh.
May: Eight serial blasts tear through the northern Indian tourist city of Jaipur, killing 65 and injuring 150. A group calling itself the 'Indian Mujahideen' claims responsibility.
July 26: Eight bombs go off in the high-tech southern Indian city of Bangalore, leaving one dead and seven wounded. Indian Mujahideen claims to have struck again.
July 27: A string of 16 or more bombs hit the communally-tense western city of Ahmedabad in Gujarat state, killing 45 and injuring over 160. Indian Mujahideen sent a claim before the blasts.
Sept 13: A series of bomb blasts rock New Delhi, killing 22 and injuring 98 in busy, upmarket shopping areas of the Indian capital. Indian Mujahideen again claims responsibility.
Oct 30: A dozen bomb blasts rip through Guwahati, the main city of northeastern Assam state, killing at least 71 people and injuring more than 300.
Nov 26-29: 10 gunmen, armed with explosive devices, launch a coordinated attack on various high-profile targets in Mumbai, killing 166 people. India blames the attack on Pakistan-based militants and suspends peace talks with Islamabad.