MEXICO CITY, Mexico (CNN) -- Gunmen shot and killed 17 patients and wounded six others in a drug rehabilitation center in northern Mexico late Wednesday, the state-run Notimex news agency reported.
The "El Aviane" rehab facility is located in Ciudad Juarez, across the border from El Paso, Texas. A Mexican civic group said last week that Ciudad Juarez had the most slayings per capita than any other city in the world.
More than 1,420 people have been killed in Juarez this year, the mayor's office said this week.
The violence there came on the same day that gunmen shot dead the No. 2 security official and three others in Michoacan, the home state of Mexican President Felipe Calderon.
Jose Manuel Revuelta Lopez, the deputy public safety secretary of Mexico's Michoacan state, was killed in a shootout that also claimed the lives of two of his bodyguards and a bystander caught in the crossfire, said Jesus Humberto Adame Ortiz, spokesman for the state.
Revuelta was leaving his office at 5:15 p.m. (6:15 ET) in the state capital, Morelia, when the shooting occurred, Adame said.
An unprecedented wave of violence has washed over Mexico since Calderon declared war on drug cartels shortly after coming into office in December 2006. More than 11,000 people have since died, about 1,000 of them police.
The offensive against the government has been especially fierce in Michoacan.
In July, the La Familia Michoacana drug cartel was accused of assaults in a half-dozen cities across the state and of torturing and killing 12 off-duty federal agents and dumping their bodies on a remote road. That violence was thought to have been retaliation for the arrest of a La Familia leader.
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