militants fired two rockets in Manipur's Bishnupur district on Friday.
According to officials, security forces are on high alert as tension has gripped the Imphal Valley region following high-tech attacks over the past few days.
The rocket attacks came after drones were used to drop bombs at two nearby places in Imphal West district earlier this week.
An elderly man offering prayers was killed in the rocket attack. The rocket fell just 100 m away from the Indian National Army Museum in the heart of Moirang town of Bishnupur district. The museum is dedicated to Netaji Subhas Chandra Bose.
Manipur Police sources said that INA museum might have been the target of the attack, adding that rockets were fired from the hills of Churachandpur district toward the low-lying residential locality of Tronglaobi. The range of the rockets was estimated to be over 3 km.