Wed Nov 4, 4:57 PM ET
The bloodshed raised to 30 the number of homicides in Ciudad Juarez in just four days.
A spokesman for prosecutors in northern Chihuahua state, Arturo Sandoval, said there was no immediate information on a motive for the early morning attack at the Amadeus bar. But the methods bore the hallmarks of attacks by drug cartels.
Prosecutors later said the four men found dead on a sidewalk elsewhere in the city appeared to have been lined up against a wall and shot to death.
About 1,900 people have died in drug-related killings in Ciudad Juarez so far in 2009. The city, which lies across the border from El Paso, Texas, has one of the highest homicide rates in the world.
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