AKIPRESS.COM - Egyptian security forces killed 12 Mexicans and Egyptians and injured 10 "by accident" on Monday, mistaking a tourist convoy for militants they were chasing in the country's western desert, the ministry of interior said.

At least two Mexicans were killed, Mexico's foreign ministry said in a statement.

A joint force from the Egyptian police and military was chasing militants in the country's vast western desert, which borders Libya, when it inadvertently opened fire on the convoy.

The convoy was made up of four four-wheel drive vehicles, the Egyptian interior ministry said in a statement, and there will be an investigation into how and why the tourists entered an off-limits area.

Mexican President Enrique Pena Nieto condemned the attack on his Twitter account, describing it as a tragic incident and demanding a full investigation.

Egypt is battling an insurgency that gained pace after the military ousted Islamist President Mohamed Mursi of the Muslim Brotherhood in mid-2013 after mass protests against his rule.

The insurgency, mounted by Islamic State's Egyptian affiliate, has killed hundreds of soldiers and police and has started to attack Western targets.

Earlier on Sunday Islamic State released a statement carried by its supporters on Twitter saying it had repelled an attack by the Egyptian military in the western desert, a recent development for the insurgency that had been largely based in the Sinai Peninsula with occasional attacks taking place in Cairo and other cities.