BBC Verify looks at the evidence behind allegations that the Salvadoran mistakenly deported to a mega-prison was a dangerous gang member.

President Donald Trump said in an interview with ABC News on Tuesday that he "could" have Kilmar Abrego Garcia returned to the U.S. with one phone call, even though the administration has argued in court that the government has no ability to get him back.

A federal judge has again directed the Trump administration to provide information about efforts to retrieve Kilmar Abrego Garcia from an El Salvador prison.