Members of the US Capitol Police will be among those interviewed as witnesses and if evidence emerges that implicated any of those officers as complicit, they will be charged, acting US attorney Michael Sherwin told reporters in a news briefing.

“All options around the table,” including charges of seditious conspiracy, rioting and insurrection, Sherwin said.

Some Capitol police officers were captured on camera posing for selfies with pro-Trump rioters who broke into the building on Wednesday that houses the House of Representatives and Senate.

The assault by supporters of President Donald Trump forced members of Congress who were in the process of certifying president-elect Joe Biden’s Nov 3 election victory to evacuate the chambers for several hours.

Sherwin said there were electronics stolen from US senators’ offices that could potentially jeopardise national security.

“Materials were stolen, and we have to identify what was done, mitigate that, and it could have potential national security equities,” he said.

“We just don’t know the extent of that damage at this point – if there was damage, we don’t know the extent of that.”