Smoke is seen coming from a construction site in Chaoyang district after a fire broke out on Tuesday. [Photo/CFP]

A construction site caught fire in Beijing on Tuesday, the Beijing Times reported.

The fire broke out in the foundation of a building outside the 2nd Ring Road in Chaoyang district at about 10:10 am, the paper said. No casualties were reported.

"The smoke was heavy as the burning materials are waterproof," a worker told the paper.

The fire was put out about half an hour later and the cause of the incident is still under investigation.