Updated

Tourism officials have closed a newly opened glass bridge in a central China tourism spot after cracks appeared in the structure.

The glass walkway in Henan province's Yuntaishan scenic area had been supporting dozens of tourists on Monday when the cracks appeared with a loud bang.

The area's management bureau said on its microblog Thursday that there was no threat to safety because only one of the three layers of glass that make up the walkway was damaged. It said investigators were looking into the cause of the fissures.

The bridge hugs a cliff side roughly 120 meters (394 feet) above a canyon in the remote mountain areas renowned for its scenery. It opened on Sept. 20, just in time for China's weeklong Oct. 1 National Day holiday.