Authorities in Mexico discover a tunnel being dug underneath the US border for transporting drugs from Tijuana to California.
Following a surveillance operation, Mexican soldiers uncovered the tunnel being constructed inside a house near the US border with Mexico and caught ten people digging at the site with shovels.
Nine men and a woman were arrested at the scene. Police said the 298 metre-long tunnel which had not been completed, was big enough for a grown man to stand in and was fitted with electrical and ventilation systems.
It is believed Mexican drug cartels have bored scores of tunnels under the US-Mexico border in recent years to counter increased security along the border with neighbouring states California, Arizona and Texas.
Tijuana is the principal gateway for drugs entering California from the Mexico. In July Mexican soldiers burned 300 acres of marijuana which police believe were destined to pass through improvised tunnels.