Warning: Viewers may find the footage distressing

Video shows the moment debris from a small aircraft fell to the ground after a crash into Beijing's tallest skyscraper.

Eyewitnesses told Reuters news agency that an aircraft the size of a car crashed into the CITIC Tower, also known as China Zun, on Friday.

Social media footage captured from a building nearby showed what appeared to be a small plane on the ground. Firefighters were also seen extinguishing a fire in the tower.

CITIC Tower is a 108-storey skyscraper in Beijing's central business district and the headquarters of the state-owned conglomerate CITIC Group, one of China's largest.

It is not known if there were any casualties and there has been no immediate comment from authorities about the incident.