Nine employees at a car wash in Allston, all of whom had work permits, were detained in a raid by U.S. Immigration and Customs Enforcement agents Tuesday morning, the business’s manager said.

At about 10:30 a.m., around 22 federal agents arrived at the Allston Car Wash on Cambridge Street with subpoenas in hand, according to manager Jose Barrera.

“It was very intimidating the way they showed up,” Barrera told Boston.com.

The masked agents asked the employees to show their documents, but began detaining them before giving them an opportunity to retrieve the documents from their work lockers, which Barrera attributed to the language barrier between them.

“They were not able to clearly speak to the officers and get a chance to present their documents,” Barrera said.

Of the nearly two doz

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