Attack in western Mexico leaves more than a dozen police killed

• 'Armed civilians' shoot state officers executing a judicial order
• Michoacin state has seen recent spike in violence

At least 13 police officers were killed and three injured on Monday by gunmen in the western state of Michoacin, a region where violence attributed to organized crime has spiked in recent months.

The state police officers had gone to a home in the town of El Aguaje in Aguililla municipality to enforce a judicial order when "several armed civilians fired on them", Michoacin's state security department said in a statement.