Canadian Prime Minister Mark Carney has criticised Britain's invitation to Donald Trump for a second state visit, saying it undermined his government's effort to project a united front against the U.S. president's talk of annexing Canada.

Pakistan returned a captured border guard to India on Wednesday, in a fresh sign of detente after a ceasefire ended four days of conflict between the nuclear-armed rivals.

Tension between the nuclear-armed nations is soaring. Pakistan's Shehbaz Sharif has vowed to retaliate after Indian strikes killed more than two dozen people.

India and Pakistan agreed to stop firing along their border on Saturday, bringing an end to the escalated tensions between the two arch-rivals after multiple strikes were launched against military bases.

Cross-border firing was reported on both sides of the border dividing Kashmir, the disputed region between India and Pakistan. Some of the heaviest fighting took place earlier on Saturday.

Mohammad Iqbal was working the nightshift at a power plant when he got a frantic call from his family saying artillery shells were exploding around their home.

Pakistan said it shot down five Indian jets on May 7 as fighting between the nuclear-abled rivals intensified before a US-brokered truce put a pause to the conflict triggered by a deadly attack on tourists in Indian-administered Kashmir.

The Foreign Secretary will brief Parliamentary Committee on External Affairs on the current situation with Pakistan on May 19, said panel chairman Shashi Tharoor.