A pilot was killed when his small aircraft crashed into Beijing's tallest building, with 13 people also injured, Chinese authorities said on Saturday, without elaborating on the cause of the rare incident.

Beijing's airspace is regulated by some of the strictest security measures in the world.

The cause of the damage could not be independently verified, and authorities did not immediately issue a statement on the incident.

A startling incident unfolded in Beijing as a small aircraft seemingly collided with the city's tallest skyscraper, the CITIC Tower. Social media footage showed debris falling and…

Social media posts of the building were quickly removed from social media

A car-sized aircraft crashed into Beijing's tallest skyscraper, the 108-storey CITIC Tower, on Friday, according to two bystanders cited by Reuters.