Secret police agents abounded in that country.

在那个国家秘密警察多如牛毛。

youdao

Civilians then checked IDs again, fearing plain-clothes police might seek to act as agents provocateurs.

平民们接着再次检查身份，唯恐可能混入便衣警察伪装的奸细。

youdao

Undercover agents are police who work undercover to investigate crime and are totally different from little security informants.

警察从事秘密的调查活动才叫卧底，完全不同于治安小信息员。

youdao

Agents also arrested a legal permanent resident, in Flushing,New York, and a police informant.

VOA: standard.2009.09.20

New York City Police Commissioner Raymond Kelly told reporters Sunday, while Najibullah Zazi visited New York earlier this month, agents legally searched his rental car and found a laptop computer.

VOA: standard.2009.09.20

Security officials in Massachusetts say there are no known threats to Boston and that Thursday's raids at a suburban home and a fuel station followed a period of close, confidential contact with New York's police department and federal agents.

VOA: standard.2010.05.14

Observers agree that global partnerships between police agents, customs agencies and the pharmaceutical industry need to be formed in order to successfully combat the problem.

CNN: Fighting the growing menace of fake drugs

In a joint raid last month, Honduran police and agents from America's Drug Enforcement Administration seized about half a tonne of cocaine on the Mosquito Coast, but also killed four people whom locals say had nothing to do with the drug transfer.

ECONOMIST: Timid steps to tame the world��s most violent country

The evidence Tripi spoke of was compiled by a federal task force that looked into the Camacho murders for more than a year and was made up of Buffalo police detectives, FBI agents and state police.

WSJ: Officials question 2004 Buffalo murder conviction