HANOI (Reuters) - An unidentified flying object exploded in mid-air over a southern Vietnamese island, state media said on Wednesday, a day after Cambodia’s air force retracted a report of a mysterious plane crash.

The Vietnam News Agency said residents of Phu Quoc island, 10 km (6 miles) off the coast of the Cambodian province of Kampot, found shards of grey metal, including one 1.5 meters (1.5 yards) long.

“The explosion happened at about 8 km (5 miles) above the ground, and perhaps it was a plane, but authorities could not identify whether it was a civil or military aircraft,” VNA said in a report headlined “UFO explodes over Phu Quoc Island.”

Vietnam reports UFO explosion off Cambodia coast | International | Reuters