A previously unknown group is claiming responsibility for the attack.

一个不知名的组织宣布对此次袭击事件负责。

youdao

Initially there were reports of two gunmen. A previously unknown group is claiming responsibility for the attack.

最初已有关于两名袭击者的报道，而先前一不知名组织宣称对该袭击事件负责。

youdao

She would have hopelessly tried, being spun around by her case manager, counselor, unit manager all the way up to the warden, each one passing the buck, claiming it was so and so's responsibility.

她怎么努力也无济于事，被她的案子负责人、律师、单位负责人直到那位典狱长像“踢皮球”一样踢来踢去，各个都推卸责任，都说这事儿该由某某某负责。

youdao

Belmoktar, the man behind the group claiming responsibility for the attack and kidnappings, is known for seizing hostages.

CNN: STORY HIGHLIGHTS

The man behind the group claiming responsibility for the attack and kidnappings is a veteran jihadist known for seizing hostages.

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He says hidden in the code of Netsky-AC is a sarcastic message directed toward anti-virus companies, claiming responsibility for both.

CNN: Sasser worm rips through Internet