长青道爆炸造成4人死亡,9人受伤. Explosion at Chongqing tunnel site kills four, injures nine.

周一下午在中国重庆的一座高速公路道建设工地发生爆炸,造成四人死亡,9人受伤. A blast at a highway tunnel construction site in Chongqing, China, killed four people and injured nine others on Monday afternoon. 爆炸发生在下午3点10分左右, 在正在修建的国家高速公路的一段. The explosion occurred around 3:10 p.m. at a section of a national highway under construction. 据报道, 一名工人失踪,12人受伤. Initially, one worker was reported missing and 12 were injured. 尽管接受了医疗治疗, 但三名受伤者死亡. By Tuesday midnight, the missing person's body had been recovered, and three of the injured died despite medical treatment. 警方怀疑爆炸是由易燃气体造成的, 并将现场封锁为调查. Authorities suspect the blast was caused by flammable gas, and the site has been secured for investigation.