Mexico has issued arrest warrants for 23 former officials, guards or police officers for allegedly participating in the escape of drug lord Joaquin "El Chapo" Guzman or failing to prevent it.
Almost all of them are believed to be in custody.
Attorney General Arely Gomez told the Senate on Thursday that in addition, 10 civilians who aided in Guzman's escape are being held under a form of house arrest.
Among those being held for trial are the former coordinator general of federal prisons, the former director general, nine monitors from the Altiplano prison's control room and the prison's commander.
Guzman escaped Mexico's maximum security prison on July 11 through a long tunnel that led to his cell.
Gomez says "those who helped him escape will not escape justice".
