Separatist militants set off bombs and opened gunfire across India's northeast on Saturday, killing at least 46 people and wounding nearly a 100 in one of the bloodiest days in the troubled region. Two bombs exploded in a marketplace in Dimapur, commercial centre of the state of Nagaland, while a third ripped through a crowded railway station there almost simultaneously, an officer at the local police station said. Twenty-six people died in the Nagaland attacks, the deadliest since a ceasefire with the main Naga separatist group began seven years ago. Later on Saturday, heavily armed Bodo tribal guerillas fighting for a separate homeland in the neighbouring state of Assam drove into a town square and gunned down 11 people in a weekly market. Almost simultaneously guerrillas of the United Liberation Front of Assam, the biggest of the insurgent groups in the northeast, set off grenades at four different places in Assam killing eight people. One man had died in a blast earlier on Saturday. Twelve people died in the attack at Nagaland's main railway station in Dimapur and eight were killed at the market. Six later died in hospital. "It was a powerful blast, the tin roof of the railway platform has been blown," railway official Robin Kalita said.