More than 1,000 people have been killed in Mexico in drug-related violence this year. In 2008, the toll doubled from the previous year to 6,290. Both the U.S. and Canada have warned that murders related to drug activity in certain parts of Mexico, particularly along the border with the U.S., raised the level of risk in visiting the country.
There are signs the violent competition among Mexican drug and smuggling cartels is spilling across the border, as cities in Arizona report increases in such crimes as home invasions. More than 700 people were arrested as part of a wide-ranging crackdown on Mexican drug cartels operating inside the United States, the Justice Department said last month.