Around the Borderland Beat

Around the Borderland Beat in pictures:

Police badges, ammunition and a packet of marijuana are displayed during a media presentation at the 7th Military Zone on the outskirts of Monterrey. The army detained Juan Carlos Olivera Acosta, ring leader of a cell of Los Zetas operating out of southern Nuevo Leon that had previously managed to escape from several federal operations, according to local media. The army also detained two accomplices, one of them a policewoman of Guadalupe, and seized small quantities of marijuana, ammunition, three machine guns and a pistol.

 Soldiers escort Juan Carlos Olivera Acosta, known as "El Sonrics", a member of the Zetas drug gang during a media presentation at the 7th Military Zone on the outskirts of Monterrey.

Soldiers climb on a truck while leaving a crime scene in Cancun. A suspected local leader of the Los Zetas drug gang was shot dead during a shootout with police and military and two suspects were arrested, according to local media.

Mexican President Felipe Calderon (front) drives an armoured military vehicle during the 98th anniversary of the creation of the Mexican army, at a ceremonyin an army base in Reynosa in the state of Tamaulipas, Mexico,The Mexican army will strengthen its presence on the northern border used by drug smugglers, Calderon said on Saturday during a ceremony to honor the armed forces.

Students and activists gather during a protest against drug violence in Mexico, in Mexico City. People lit candles in memory of thosekilled in the war against drugs as more than 34,000 people have been killed in drug violence across Mexico over the past four years.

A handgun with the names "La Familia Michoacana" and "La Morza," an alleged leader of La Familia Michoacana drug gang, engraved onthe barrel and the handle is presented to the media in Morelia. Mexican soldiers killed one suspected drug gunmen and injured another during a gun battle that took place at a safe house in the state of Michoacan. Troops arrested two men and seized weapons. Michoacan, the home state of President Felipe Calderon, has emerged as a key battleground as the cult-like La Familia cartel fights other gangs and security forces for control of the mountainous state.

A suspect stands near confiscated weaponry as he is being presented to the media in Morelia.

Fernando Toranzo, governor of the Mexican state of San Luis Potosi, center, speaks during a press conference in Mexico City.Toranzo told W Radio station Wednesday he has seen a dramatic rise in organized crime in his state as drug cartels battle for territory, referring to the assassination of a U.S. Immigration and Customs Enforcement agent Tuesday near the town of Santa Maria Del Rio, in San Luis Potosi, when he was traveling with a fellow agent from Mexico City to Monterrey.

A man suspected of being involved with the Pacific drug cartel is presented to the media after a military operation in Jiutepec. Soldiersraided a safe house which belongs to the cartel, according to local media.

Mexican navy marines inspect and secure the scene where the bodies of two men were dumped in the Pacific coast resort city ofAcapulco, Mexico. The two bodies had their heads bound in plastic tape and their hands and feet bound with gaffer tape. They had been shot in the head and neck and a warning message to a rival drug gang was left behind.