Capitol rioters planned to capture and kill politicians, say prosecutors

Charges so far include hurling fire extinguisher at officer and beating another with flagpole

Federal prosecutors have offered an ominous new assessment of last week's siege of the US Capitol by Donald Trump's supporters, saying in a court filing that rioters intended to capture and assassinate elected officials".

Prosecutors offered that view in a filing asking a judge to detain Jacob Chansley, the Arizona man and QAnon conspiracy theorist who was photographed wearing horns as he stood at the desk of the vice-president, Mike Pence, in the chamber of the US Senate.