An aircraft about the size of a car crashed into Beijing’s tallest building, CITIC Tower, on Friday, two bystanders told Reuters , as police closed off roads around the skyscraper and stopped passersby from filming the scene. The building, known as CITIC Tower or China Zun, is a 108-storey skyscraper in Beijing’s central business district. It is the headquarters of the state-owned conglomerate CITIC Group.