Two journalists exposing Mexico’s corruption and drug violence murdered within one week

Margarito Martinez Esquivel and Jose Luis Gamboa are the latest casualties in the world's most dangerous country for reporters outside war zones

Mexico's embattled press corps has suffered a shattering start to the new year with the murders of two journalists who had dared chronicle their country's slide into drug and corruption-fuelled violence.

Margarito Martinez Esquivel, a crime reporter and photographer who often collaborated with members of the foreign media, was shot dead outside his home in the northern city of Tijuana on Monday lunchtime.