61.   Authorities were still concerned that there might be explosives on the plane and stopped short of declaring it fully resolved.

62.   Bomb attacks are common in China, where guns are rare but explosives are readily available despite increased official controls.

63.   Bomb disposal experts then boarded the aircraft to check if any explosives were on board and were still searching the plane more than five hours later.

64.   Bomb disposal experts then boarded the aircraft to check if any explosives were on board.

65.   Bombs are often used in attacks linked to business or personal disputes in China, where guns are rare but explosives are easy to obtain.

66.   Bombs are often used in revenge attacks in China because firearms are tightly controlled, while explosives are readily available.

67.   Calling the incident a terror attack, the radio report said the explosives were apparently in a car.

68.   Chelo Garcia, spokeswoman for armed forces chief Gen. Fernando Tapias, told The Associated Press the three were explosives experts.

69.   Cruder explosives are also widely available.

70.   Earlier, police had said the explosives were on the tracks.