Another suspect has been arrested in connection with the mass kidnapping from a Mexico City bar last year, the Federal District Attorney's Office said.

Daniel Martin Ortiz Ruvalcaba was detained for his role in the May 26, 2013, kidnapping of 13 young people from the Heaven bar in Mexico City's upscale Zona Rosa district, the DA's office said in a statement.

"With this capture, a total of 22 people have been turned over to judicial authorities in this case," the DA's office said, without revealing the date Ortiz was arrested.

Kidnapping, murder and other charges have been filed against all the suspects in the case.

Ortiz was identified by other suspects, who told investigators he watched the bar's exterior and let the kidnappers know when the coast was clear, the DA's office said.

Ortiz has served time in prison twice for robbery and is being investigated for his possible role in other crimes, prosecutors said.

Investigators found the remains of 13 people, all of them abducted from the Heaven bar, in a clandestine grave in Tlalmanalco, a city in Mexico state, on Aug. 22.

The bodies of the people snatched from the Heaven bar were discovered by federal authorities pursuing leads in a firearms case unrelated to the Heaven bar kidnappings.

Investigators found the mass grave - covered with cement, asbestos and lime - on the La Mesa ranch in Tlalmanalco.

The mass kidnapping and killings were in reprisal for the May 24 murder of Horacio Vite Angel, a reputed member of the La Union de Insurgentes drug gang, by the rival La Union de Tepito gang, officials said.

One of the people taken from the bar and killed, 16-year-old Jerzy Ortiz, was the son of Jorge "El Tanque" Ortiz Reyes, the jailed boss of La Union de Tepito, officials said.

Tepito is the crime-ridden downtown Mexico City neighborhood where most of the victims lived. EFE