A little-known group called Indian Mujahideen has claimed responsibility for the near-simultaneous bomb attacks in the northwest Indian city of Jaipur that killed at least 63 people and wounded more than 200 on Tuesday.
Indian women mourn the death of their relatives in the May 13 serial blasts in Jaipur, reported CNN.
The group sent an e-mail with a video attachment, claiming responsibility, to a Hindi cable news channel, Jaipur police Inspector General Pankaj Singh told CNN.
Eight bombs went off within 12 minutes and within 500 meters (0.3 mile) of each other Tuesday.
They tore through crowded markets and a packed Hindu temple.
Police defused a ninth bomb.
Jaipur, known as the "pink city" for its rose-colored forts and palaces, is a popular tourist attraction. The majority Hindu city of 2.7 million people has a sizable Muslim population.
India ranks among the countries where terrorism is most common, the U.S. State Department said.
"The conflict in Jammu and Kashmir, attacks by extreme leftist Naxalites and Maoists in eastern and central India, assaults by ethno-linguistic nationalists in the northeastern states, and terrorist strikes nationwide by Islamic extremists took more than 2,300 lives this year," the agency said.