Chinese authorities have confirmed that the pilot who crashed a small plane into the Citic Tower in Beijing last week acted intentionally. The 66-year-old pilot had a history of chronic insomnia and anxiety, according to officials. The aircraft, a two-seater plane, collided with the 109-story skyscraper, injuring 13 people. The pilot was the sole occupant of the plane and died in the crash. Authorities remained silent for nearly a week before releasing this information, first reported by Bloomberg. Further investigation is underway to determine the full motivations behind the deliberate act.