Abortion protests: Security tightened around court justices

US law enforcement agencies are beefing up security for Supreme Court justices after a leak suggested they may overturn legalised abortion.

The US Marshals Service said on Monday it was helping the agencies normally tasked with the judges' protection.

A protest was held on Monday night at Justice Samuel Alito's house in Alexandria, Virginia. Activists chanted: "Abort the court!"

Rallies were held outside the homes of two other justices this weekend.

On Saturday night, a group of about 100 people marched from the home of Justice Brett Kavanaugh to Chief Justice John Roberts' house nearby in Chevy Chase, Maryland.

Shut Down DC, the left-wing group behind Monday's demonstration outside Justice Alito's house, said the plan was to "hold a moment of silence for the rights we know are ours".