New Delhi, June 26 -- A small aircraft crashed into Beijing's tallest building on Friday evening, prompting a major emergency response in the Chinese capital. Authorities have not confirmed any casualties so far, while the cause of the crash remains unclear.

The incident occurred at the CITIC Tower, also known as China Zun, the tallest building in Beijing and the headquarters of the state-owned CITIC Group. Witnesses reported seeing a small aircraft strike the skyscraper before debris fell to the ground below.

According to CNN, people inside the skyscraper evacuated the building and gathered near its entrance, where several fire engines, police vehicles and ambulances were deployed.

The Reuters news agency also reported a heavy police ...