Pakistani soldiers fired heavy weapons into Indian Kashmir and killed three civilians on Tuesday, the Indian defence ministry said, in the latest reported skirmish between the rival nations.

They opened fire near the village of Churunda, near the Line of Control that acts as the de facto border in the Kashmir region, according to the Indian statement.

"Pakistani troops... started firing heavy-calibre weapons on the houses of civilians of Churunda village resulting in the death of three civilians," the statement said.

Pakistan army officials blamed the clash on "unprovoked" Indian fire on a Pakistan army post.

"Indian troops initiated unprovoked fire on Pakistan army post to which Pakistani troops responded," an army official said.

Local residents have reported sporadic small-arms exchanges between Indian and Pakistani troops in the same sector for the past fortnight.

Tensions between the countries last flared in the wake of the Mumbai attacks in 2008, which India blamed on Pakistan-based militants and "official agencies" of Pakistan, a charge Islamabad has denied.

Two of the three wars between India and Pakistan have been fought over divided Kashmir, which both countries claim in full.