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

The figures M, S, 1 and 3 don’t appear in other photographs of Kilmar Armando Abrego Garcia’s hand, including one shared by the Salvadoran government.

The Trump administration admitted to accidentally deporting Abrego Garcia, but has said it won’t bring him back, because he’s a member of MS-13, despite scant evidence to prove the gang affiliation.