The Mexican government says it will broaden its crackdown on drug gangs, after sending thousands of troops to troubled Michoacan state earlier this week.
Attorney-General Eduardo Medina Mora announced Thursday that the same tactics will be taken in other states. He did not identify which ones.
Government officials said at least one suspected drug trafficker was killed in Michoacan on Wednesday after a gunbattle with soldiers.
Mexican President Felipe Calderon ordered the crackdown on the drug trade in Michoacan, his home state, saying his new strategy will return tranquility to the people there.
Drug traffickers cultivate marijuana and opium in Michoacan and also use the area to smuggle illegal drugs from South America into the United States. The trade is estimated to generate some $10 billion a year.
At least 2,000 people have been killed across Mexico in recent drug cartel wars.
Some information for this report was provided by AP and Reuters.