Holding five pairs of zip-tie handcuffs, a man in head-to-toe paramilitary gear coursed through the upper level of the U.S. Senate Chamber Wednesday, captured by a Getty photographer as a mob of President Donald Trump’s supporters stormed the nation’s Capitol.

The man was not with security, who’d recently evacuated U.S. Senators and Vice President Mike Pence from the floor below. Experts say he was among the rioters who disrupted U.S. Congress’s certification of Trump’s election loss with violence, resulting in five fatalities to date.

With his identity unconfirmed by officials as of Thursday evening, the motives of the man whose tactical gear is adorned with symbols indicating support for military and police — including a “thin blue line” in the shape of Tennessee — cannot be verified.