The death toll from seven bomb explosions on commuter trains in the western Indian city of Mumbai has reached more than 160, with more than 435 others wounded.
Police say the blasts occurred in rapid succession during the evening rush hour Tuesday, in trains packed with thousands of commuters traveling home. They say the explosions were part of a well-coordinated attack.
So far, no one has claimed responsibility for the attacks, but suspicion turned to Muslim separatists fighting New Delhi's rule in Indian Kashmir.
Indian Prime Minister Manmohan Singh held an emergency Cabinet meeting in New Delhi to assess the situation. He issued a statement in which he vowed to defeat what he called the evil designs of terrorists.
Major cities across India have been put on high alert and authorities have appealed for calm.
In Indian Kashmir, a series of grenade attacks at a popular tourist spot Tuesday killed eight people, most of them tourists, and injured at least 24 others.
Authorities say suspected Islamic insurgents hurled a grenade at a tourist bus near Dal Lake, in the summer capital, Srinagar. Attackers also threw grenades at a crowded market and at two vehicles in the commercial center, Lal Chowk of the city.
Kashmir lies between Pakistan and India. Both countries claim sovereignty over the region, which is divided between them. A variety of separatist groups want either Kashmiri independence or merger with Pakistan.