A man who was thought to be dead has turned up at his family's home two months after they apparently buried him.

Aigali Supygaliev, from Kazakhstan, was pronounced dead after DNA tests on badly burned human remains proved with "with 99.2% certainty" that they were his.

Authorities issued an official death certificate and he was "buried" in September in the Muslim cemetery of Tomarly, his family's home town just north of the Caspian Sea port of Atyrau.

His brother Esengali Supygaliev, told the Azh.kz news site: "We held a wake, and the extended family organised a traditional 'konil shai' ceremony," where friends can share tea and sympathy with the bereaved.

"When Uncle Aigali walked through the door hale and hearty two months after we'd buried him, my daughter Saule nearly dropped dead of a heart attack," Esengali added.

Aigali, 63, had left home one June morning and didn't come back. "Aigali had been known to wander off for a week of two before," his sibling said.