调查人员声称尽管他们已经确定了袭击者的身份，但是其动机仍然不明朗。
Although investigators say they have established the identity of the attackers, they are still piecing together the assailants' motives.
一架身份不明的飞机坠落到中国东部地区的地面，中国国家媒体报道其发生了爆炸，但事故仍然笼罩在神秘之中，潜在的伤亡目前仍然不明。
An unidentified plane has crashed to the ground and exploded in eastern China, state media reports, but the accident remains shrouded in mystery and potential casualties remain unknown.
一架身份不明的飞机坠落到中国东部地区的地面，中国国家媒体报道其发生了爆炸，但事故仍然笼罩在神秘之中，潜在的伤亡目前仍然不明。
An unidentified plane has crashed to the ground and exploded in eastern China, state media reports, but the accident remains shrouded in mystery and potential casualties remain unknown.
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