Under the state of siege, the police could arrest suspects without charges or warrants.

在戒严状态下，警方无需指控或逮捕令就可以逮捕嫌疑人。

《柯林斯英汉双解大词典》

The police and courts in all EU members are under closer scrutiny, thanks to the push for “mutual recognition” of each others' court judgments, and such new wheezes as the Europe-wide arrest warrant.

所有欧盟成员国的警察机关和法庭都在接受严格的监督，由于推行了“相互承认”彼此的法庭判决，以及象跨欧洲拘留证这样的新花样。

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But instead of being handed free ale the wanted men found themselves confronted by police, handcuffed and under arrest.

然后到了那时候送上门的却不是免费啤酒，而是给他们带上手铐，送入大牢的警察们。

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Husbands, 23, was supposed to be under house arrest when police say he went to the mall and opened fire.

CNN: 2nd victim in Toronto mall shooting dies

At least one of the suspects in France had been in contact with Begal, and others had been under police surveillance since his arrest in July, the sources said.

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There are still hundreds of political prisoners in jail and hundreds others under house arrest or harassed by police.

CNN: 'FRUSTRATIONS ARE HIGH'