Tight security at US Capitol after plot warning

The threat appears to be connected to a far-right conspiracy theory. Picture: Jacquelyn Martin/AP

Law enforcement was on high alert around the US Capitol on Thursday after intelligence uncovered a “possible” plot by a militia group to storm the building.

The threat comes two months after a mob of Donald Trump supporters smashed through windows and doors to try to stop Congress from certifying now-president Joe Biden’s victory.