- Mexican attorney general says it's a "legal certainty" missing students were murdered
- Authorities in Mexico say it is a case of mistaken identity
- Mexico's President says it's time to move on from the tragedy
(CNN)Mexican authorities say they're not done. There are still suspects at large they have to detain, and detainees they must try and sentence. But Mexican Attorney General Jesus Murillo Karam says there is "legal certainty" that 43 college students who went missing four months ago in the Mexican state of Guerrero were murdered.