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Police: The men were arrested after they couldn't provide necessary paperwork

The German Embassy in Islamabad has not responded to a request for comment

Islamabad, Pakistan CNN  — 

Three German citizens, including a German army colonel, were arrested in a police raid Saturday in the northern Pakistani city of Peshawar, authorities said.

Police official Mian Saeed said the three men had set up an office in the city without the permission of either the Pakistani or the German government.

He said police raided the office and asked the men to provide the necessary paperwork showing their legal status in the country.

When they couldn’t provide the paperwork, they were taken into custody, Saeed said.

The German Embassy in Islamabad has not responded to a request for comment.

Journalist Saboor Khattak contributed to this report.