GUNMEN drove up to a house where a high school party was in full swing and opened fire killing 13 people and wounding 17 others in Mexico's murder capital, Ciudad Juarez.
Most of the victims were "youngsters'', the Chihuahua state attorney general's office said.
Witnesses said the gunmen drove up to the house in several cars, first shooting at people gathered outside the dwelling, then pursuing some of the youngsters who jumped over a fence to get away.
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