Mexico Gulf drug cartel leader Ezequiel Cardenas killed

Cardenas died after a shoot-out lasting several hours
A leader of Mexico's powerful Gulf drug cartel has been shot dead by security forces in a town near the US border, the Mexican military says.
Ezequiel Cardenas Guillen, known as "Tony Tormenta", was killed in the city of Matamoros, across the border from Brownsville in Texas.
He is the brother of former Gulf cartel leader Osiel Cardenas, who was extradited to the US in 2007.
Residents in Matamoros spoke of a shoot-out lasting for several hours.