Three months after a panel of experts confirmed that Alberto Nisman was murdered, federal judge Julián Ercolini ruled on Tuesday that Mr Nisman’s gunshot wound could not have been self-inflicted.

Mr Ercolini also charged a former aide to the prosecutor, Diego Lagomarsino, as an accessory to murder.

Mr Lagomarsino was the last person in Mr Nisman’s apartment and the bullet that killed the prosecutor was fired by Mr Lagomarsino’s gun, the judge said.

Commentary thread at Twitter,

1. A rambling thread on the indictment by #Ercolini of #Lagomarsino (necessary accomplice to aggravated homocide) and the bodyguards (3 of them dereliction of duty and obstruction of justice, 1 just for dereliction) related to the murder of #Nisman, and related matters

— The Almagro School (@AlmagroSchool) December 27, 2017