TAGGING WARNS OF 2ND CAR BOMB

EL PASO -- A graffiti message found Sunday night in Juarez warned U.S.
law enforcement that another car bombing will occur if they do not
arrest corrupt federal police agents.

The unsigned message told the FBI and the U.S. Drug Enforcement
Administration to investigate authorities that support the Sinaloa
drug cartel.

Otherwise, there will be another car bomb placed in Juarez to kill
federal police, the threat stated.

"If in 15 days, there is no response with detention of corrupt
federales, we will put a car with 100 kilos of C4," the message read.

Composite 4, or C-4, was the plastic explosive used for an attack that
killed three people Thursday in downtown Juarez, according to military
officials in Juarez.

FBI officials in El Paso said they will not investigate the nature of
the message because it is in a foreign country.

"We only offer assistance when requested by that government," said
Andrea Simmons, spokeswoman for the FBI.

DEA officials also said they only assist Mexican authorities when they
ask for support.

Mexican federal police said they do not regard it as a credible
threat.

"We don't give importance to those messages," said Jose Ramon Salinas,
spokesman for the federal police.

A similar message, known as "narco-pinta," was found signed by the
Juarez cartel warning they had more car bombs targeted to authorities
helping Joaquin "Chapo" Guzman, leader of the Sinaloa drug cartel.

Military officials in Juarez said 10 kilos of explosive rigged in a
car were detonated from a cell phone that day.

It was the first attack of its kind since the Mexican government began
cracking down on drug cartels.