The prosecutor's office in Venezuela says it will investigate claims of "torture" committed against migrants the US had sent to a notorious prison in El Salvador, from where they were freed last week. "We have decided to open a formal investigation," Attorney General Tarek William Saab tells reporters. "I make a call to the International Criminal Court, the UN Human Rights Council, and relevant organizations both in America and the world, to do the same, to act accordingly." SOUNDBITES