Mexican activist who searched for disappeared brother now missing after attack

Lorenza Cano seized by gunmen in Guanajuato state after her husband and son shot dead in attack

A Mexican woman who spent five years looking for her disappeared brother has herself been abducted in an attack in which her husband and son were shot dead.

Lorenza Cano, one of Mexico's many volunteer searchers trying to find the country's 114,000 desaparecidos, was seized late on Monday by a group of gunmen who burst into her home in the northern city of Salamanca.