Mexican police discover 11 mutilated and decapitated corpses dumped on the roadside in same state where 43 trainee students went missing

Authorities have found eleven mutilated corpses, many of them decapitated and burnt dumped by the roadside in southwest Mexico.

The gruesome discovery was made on Thursday in the same state where 43 trainee teachers were abducted and apparently massacred two months ago, local authorities said.

A law enforcement official said the bodies were found near the city of Chilapa, an area that is known for gang violence and plantations of opium poppies.

The area is not far from the rural teachers' college known as Ayotzinapa, 43 of whose students disappeared in September and are believed to have been killed by a drug gang. 

The grisly discovery came just hours before embattled President Enrique Pena Nieto was set to announce a series of measures to improve law and order in a land grappling with daily drug gang violence.

Some of the naked torsos of the corpses were burnt, photographs published by local media showed.

Nieto has been under pressure from mass protests to end impunity and rampant brutality by security forces since the 43 students were abducted.

Details of his plan have not been announced, but government officials have tried several similar anti-crime plans in the past, with mixed results.