Felipe Calderon, the president of Mexico, has condemned the latest killings linked to the country's drugs war. The bodies of 18 men and two women were found in different areas of Ciudad Madero. Many were riddled with bullets and were gagged and handcuffed.
In a separate attack 350km north, armed men shot dead 19 people at a drug rehabilitation centre in Chihuahua.
Al Jazeera's Mariana Sanchez reports on a city seeing a surge in drug-related killings.
June 12, 2010