A light aircraft has crashed into the 109-storey CITIC Tower in Beijing, forcing the evacuation of the city's tallest skyscraper, according to media reports.

The 528-meter (1,732-foot) tower, also known as China Zun, dominates the skyline of the Chinese capital’s central business district.

Videos circulating on social media appear to show debris from a light sport aircraft falling to the ground after it struck the upper section of the building at around 5:40 PM local time on Friday.

Reuters reported that two glass panels on one of the tower’s upper floors were shattered in the impact. Chinese authorities have not yet confirmed the number of casualties or disclosed the cause of the crash.

Emergency crews quickly responded to the scene, with several ambulances seen near the skyscraper as police sealed off the surrounding area and moved onlookers away.

A woman who said she works in the tower described the hurried evacuation to the South China Morning Post.

“I ran out without my ID card or bag,” she told the outlet.

Authorities have not announced whether anyone aboard the aircraft survived.