North Korean officials have failed to turn up for talks with a US team on the repatriation of the remains of American soldiers killed in the Korean war.

Returning the remains was a commitment from the 12 June summit between Kim Jong-un and Donald Trump in Singapore.

The talks had been expected in the demilitarised zone on Thursday. Reports say North Korea is now asking for higher-level talks for Sunday.

An estimated 30,000 US soldiers died in the 1950-53 Korean war.

There are about 7,700 US soldiers classified as missing in action from the war.