Mexico ambush: 13 state police killed in attack on convoy

Attacks on police have become routine as the country fights drug cartels and organised crime

Thirteen Mexican police officers and investigators have been killed in an ambush as they travelled through a rural region - marking the latest attack on law enforcement by brazen criminal groups.

Eight state police officers and five members of the state's investigative police force died in the ambush in the municipality of Coatepec Harinas, 125km (78 miles) south-west of Mexico City in Mexico state on Thursday afternoon, according to officials.