On 7 February 1979, Vietnam Civil Aviation Flight 226 departing from Gia Lam Airport was held hostage by six hijackers using bottles of liquor and grenades, who demanded it be flown to Thailand for asylum. During the ensuing firefight with Nguyen Dac Thoai, an air marshal from the 144th Brigade, General Staff of the Vietnam People's Army, four hijackers were killed and two were apprehended. This was the third hijacking of a Vietnam Civil Aviation aircraft in a short period, following hijackings in 1977 and 1978.