Defence Minister Manohar Parrikar condemns Manipur attack

Unidentified tribal guerrillas, firing rocket-propelled grenades and detonating improvised explosive devices, killed 20 Indian soldiers on Thursday in an ambush in the country's mountainous northeastern state of Manipur, an army spokesman said.

Manipur, with a population of 2.5 million, has struggled for years in the grip of an armed insurgency in which several tribal militant groups are active.

Eleven soldiers were also wounded in the most deadly attack in the region in recent years, which targeted a troop convoy heading for Imphal, the capital of the state bordering Myanmar.

"We do not know as yet who is responsible," said a spokesman at army headquarters in the capital, New Delhi, adding that details were still coming in from the scene.

Defence Minister Manohar Parrikar condemned the attack and said "those who committed the cowardly act would be brought to book", his spokesman said in a series of tweets.

Defence Minister @manoharparrikar condemns the attack on Army personnel in Manipur. (1)

— Sitanshu Kar (@SpokespersonMoD) June 4, 2015

Defence Minister @manoharparrikar assures that those who committed the cowardly act will be brought to book. (2)

— Sitanshu Kar (@SpokespersonMoD) June 4, 2015

Defence Minister @manoharparrikar: Army will continue to work towards bringing peace and normalcy to the state of Manipur. (3)

— Sitanshu Kar (@SpokespersonMoD) June 4, 2015

Defence Minister @manoharparrikar conveys his deepest condolence to bereaved families of the brave Army men who lost their lives today. (4)

— Sitanshu Kar (@SpokespersonMoD) June 4, 2015

Security analysts suspect the attack, in the state's Chandel district, was in retaliation for the reported killing of a woman by soldiers on Monday. The district observed a complete shutdown on Wednesday in protest over the killing.

Security forces have struggled to contain unrest in the state, despite being given sweeping shoot-to-kill powers in so-called 'disturbed areas' under the controversial Armed Forces
Special Powers Act (AFSPA).

The law operates in most northeastern states, where clashes claimed 450 lives last year, the South Asian Terrorism Portal says. Lawmakers recently lifted the act in one state, Tripura, that borders Bangladesh.