The pilot killed when a plane crashed into Beijing's highest building last week was a 66-year-old man with the surname Liu, Beijing's Chaoyang district government said on Thursday.
Liu, a Beijing native, had suffered from insomnia and anxiety, the government said, adding that the cause of the incident was "personal reasons."
The pilot deviated from a designated area while flying solo and lost contact with an airport in Beijing's suburban Pinggu district, it added.