Francisco Velasco Delgado is being questioned by prosecutors in the AG office's organized-crime division.They said prosecutors planned to ask a federal judge to allow them to hold the police chief without bail.Retired Gen. Mauro Enrique Tello Quiñones, 63, was found dead last week inside a van on the Cancun-Merida highway together with army Lt. Gertulio Cesar Roman Zuñiga and a civilian, Juan Dominguez Sanchez

."The result of the autopsy shows that they were tortured before being riddled with bullets,"

the Quintana Roo state Attorney General's Office said.Velasco's arrest followed the arrival at police headquarters in the municipality of Benito Juarez, which includes Cancun, of some 25 soldiers who locked down the station for about an hour Monday morning.Before he was taken into custody, Velasco told reporters the soldiers were conducting a routine inventory and inspection of police weapons and that the military presence did not mean the army was taking charge of public safety in Cancun, as it did earlier in violence-wracked Tijuana, which lies near San Diego, California.Tello Quiñones, who served as military attache at the Mexican Embassy in Spain and as commander of the military zone of the western state of Michoacan, was laid to rest with full military honors after a ceremony attended by Mexican President Felipe Calderon.The mayor of Benito Juarez, Gregorio Sanchez, said that Velasco was "comparing information" with federal prosecutors, and named Gumercindo Jimenez Cuervo acting police chief.Since taking office in December 2006, Calderon has deployed more than 30,000 soldiers and federal police to nearly a dozen of Mexico's 31 states in a bid to stem the wave of mainly drug-related violence blamed for more than 8,000 deaths over the past two years.
The anti-drug operation, however, has failed to put a dent in the violence due, according to experts, to drug cartels' ability to buy off the police and even high-ranking prosecutors.