Mexican drug lord Joaquin “El Chapo” Guzman allegedly has a nasty warning for the Islamic State group: Don't mess with Mexico. One of the world's most wanted men and the leader of the violent Sinaloa Cartel has declared war on the Islamic State group, an encrypted email obtained by the cartel-connected indicated.

Guzman reportedly is angry with ISIS, another name for the terrorist organization, because it allegedly destroyed a shipment of his product. His cartel is famous for controlling much of the world's cocaine and heroin trade. "You [ISIS] are not soldiers. You are nothing but lowly pu-----. Your God cannot save you from the true terror that my men will levy at you if you continue to impact my operation," he allegedly wrote. "My men will destroy you. The world is not yours to dictate. I pity the next son of a wh--- that tries to interfere with the business of the Sinaloa Cartel. I will have their heart and tongue torn from them."

It's unclear if the email is real, but various media outlets reported the story this week. Asked about whether the rumor was authentic, DEA spokesperson Rusty Payne told Forbes via e-mail: “I don’t have any information to weigh in either way.” The Washington Post called the story a fraud. 

“El Chapo” has become somewhat of an international media obsession since he broke out of Mexico’s toughest maximum-security prison in July through a tunnel. He had previously escaped from a jail in Jalisco in 2001 and was recaptured in February 2014.

The email story comes as the Sinaloa Cartel has been trying to push its product in the Middle East where a growing party drug scene caught the eye of Latin America's drug lords. “As drugs are not a part of the organizational ideology for a Muslim state, ISIS fighters have been destroying shipments of drugs from the cartels,” said. El Chapo's drug trade is allegedly worth $1 billion.

Some experts have argued that ISIS leaders want to sell the drugs to Europe and the Middle East themselves.