AFI, a past history of mutual mistrust between Mexican and American law-enforcement officials has given way to closer co-operation under Mr Fox.

ECONOMIST: Drugs and violence in Mexico

"It is sad that two more athletes - Ashwini Akkunji and Priyanka Panwar - tested positive for anabolic steroids, " Athletics Federation of India (AFI) Director ML Dogra said.

BBC: India: Two more athletes fail doping test