Mexican official says Gustavo Valdes was likely behind the kidnapping . Police rescue four of the two kidnapped journalists . Another reporter was released Monday . CNN 's Krupskaia Alis and Gustavo Valdes contributed to this report . The journalists were kidnapped while covering a prison protest .
Mexican official says Gustavo Valdes was likely behind the kidnapping . Police rescue four of the two kidnapped journalists . Another reporter was released Monday . The journalists were kidnapped while covering a prison protest .