Two bombs, suspected to be improvised explosive devices (IEDs), exploded at separate places in the state an hour before the official Independence Day programme started at the Manipur Rifles Parade Ground, Imphal, police said.
No death or injury to anyone was reported.
No one has been arrested so far in this connection.
The first bomb exploded at around 8.20 am next to a saloon at Tera Bazaar in Imphal West district, police said.
The second bomb went off at about 8.33 am near the gate of Manipur College behind Assam Rifles post in Imphal West district, 3 km from here.
Several militant organisations had given a call to boycott Independence Day celebrations.
In separate incident that shook Assam, suspected ULFA-Independent militants exploded four bombs in various parts of Assam's Tinsukia district today as the state celebrated the nation's 70th Independence Day on 15 August.
There was no casualty or injury in any of the explosions.
-With PTI inputs