Mexican police said Tuesday they had captured an alleged drug trafficker involved in the abduction and killing of 20 local tourists in the Pacific beach resort of Acapulco last year.
Moises Montero Alvarez was a suspected leader of the Independent Cartel of Acapulco, said Luis Cardenas Palomino, regional security head of the federal police.
Montero was detained on Monday in Acapulco with three others, he said.
Police suspect he was involved in the abduction and killing of 20 tourists from Michoacan state, which neighbours Acapulco, last September, and the abduction of two police officers in July.
Police said last November they had captured another suspected drug trafficker, Carlos Montemayor Gonzalez - from the Beltran Leyva cartel - who allegedly confessed to taking part in the tourist killings.
Montemayor allegedly said the gang mistook the tourists for members of the rival La Familia cartel.
Acapulco is one of the worst hit states in violent score-settling between criminal gangs which has rocked the country in recent years.
More than 41,000 people have died in violence blamed on organized crime since President Felipe Calderon launched a military crackdown on drug gangs at the end of 2006.