Two Guatemalan citizens wanted in connection with a November 2008 massacre in their homeland were sent home to face justice, the Mexican Attorney General's Office said.

Fugitives Marvin Montiel Marin and Sara Elizabeth Cruz Mancilla were detained Monday in the central town of Zinacantepec by agents of the AG's office with support from federal police.

The arrest was the result of "constant" cooperation and intelligence-sharing between authorities in Mexico and Guatemala, the AG's office said in a statement.

Montiel and Cruz are reputedly members of a drug trafficking outfit linked to the November 2008 slaying of 16 people in the eastern Guatemalan province of Zacapa.

The victims - 15 Nicaraguans and a Dutch national - were passengers on a bus traveling from Managua to Guatemala.

A witness told Guatemalan prosecutors that drug kingpin Mario Ponce ordered the bus commandeered based on what turned out to be an erroneous tip it was carrying drugs.

Ponce's men intercepted the bus in an isolated rural area. After failing to find any drugs, they set the vehicle on fire with the passengers inside.