Gildardo Lopez Astudillo’s arrest comes weeks before the 10th anniversary of the students’ disappearance. Authorities in Mexico say they have arrested an alleged cartel chief linked to the decade-old disappearance of dozens of students. Gildardo Lopez Astudillo, the suspected cartel leader, was detained on charges of “organised crime” and taken to the Altiplano maximum security prison in south-central Mexico, Reuters news agency reported, citing a federal security source....