Mexican authorities have been burning what they say is their biggest haul of marijuana, with an estimated street value of about $435m (£275m). It will take two days to burn all the drugs.

More than 130 tonnes of the drug were found in pre-dawn raids in the city of Tijuana on Monday. Packages of marijuana were taken to a military base in Tijuana, and unloaded by Mexican forces to be incinerated.

A soldier cuts open a package of marijuana to be burned.

The marijuana was found in tractor trailers and houses during raids in three neighbourhoods of Tijuana.

The 15,300 packages were wrapped in various colours and decorated with apparently coded phrases and pictures including the cartoon character Homer Simpson.

Police believe the marijuana was bound for the United States. Tijuana is on the the US-Mexico border, across from San Diego.

Authorities say the drugs probably belonged to the powerful Sinaloa cartel.

The Sinaloa cartel's leader Joaquin "El Chapo" Guzman has expanded the reach of his gang in Mexico to control key trafficking over the past decade.

The government flew journalists out to see the bonfire, in an attempt to send a message that it is cracking down on the drug gangs.