Secret Service police detained an unknown man in front of a White House checkpoint on Friday. (Reuters)

A man walked up to a White House entrance on Pennsylvania Avenue on Friday afternoon, stripped naked and assaulted an officer who tried to subdue him, according to a spokesman for the U.S. Secret Service.

The man was taken to an area hospital for treatment of minor injuries, said the spokesman, George Ogilvie. He said the man would later be arrested. The Washington Post is not identifying the suspect pending formal charges being filed.

The incident occurred about 3 p.m. in the 1600 block of Pennsylvania Avenue NW, which has been turned into a pedestrian thoroughfare. It is the key spot for tourists to see the White House and for protesters voicing grievances.

Ogilvie did not have any information on what, if anything, the man said or the reason he took off his clothes. Secret Service officers covered the man with a blanket and moved onlookers out of the area.

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