( CNN ) -- A group of heavily armed men opened fire at a soccer match between two local teams in western Ciudad Juarez , Mexico , killing seven people and wounding two others , according to a municipal police spokesman . The soccer field is at a community center opened four months ago as part of a program to decrease drug violence in a city that has been racked by violence and killings linked to drug cartels . Police said Monday they had not determined a motive for the shooting . The dead from the shooting Sunday evening were males ranging in age from 19 to 26 , police said . At least one was a soccer player -- an image from the scene showed the dead player face down on turf . Above him was a posted sign reading in Spanish , `` Live Better '' -- a slogan in Juarez 's anti-violence campaign . Three victims died at the scene , while four others died on the way to area hospitals . The gunmen -- reportedly traveling in three vehicles -- sprayed the soccer field with about 180 rounds from assault rifles around 6 p.m. , just before the game got started , police said . Among the dead and wounded were several fans . Some of the victims were taken to hospitals by family members . One of the injured was a 12-year-old shot in the foot , the newspaper El Diario de Juarez said . `` We still do not have a motive why they opened fire , '' municipal police spokesman Adrian Sanchez told CNN in a phone interview from the scene . `` They fired 180 rounds in three or four seconds . It happened fast , '' Sanchez added . `` People here are still confused about what happened . '' Journalist Arturo Chacon contributed to this report .
Gunmen open fire on a crowd at a soccer game in Ciudad Juarez , Mexico . 180 rounds are fired in three or four seconds , police say . Three people die at the scene , four others die en route to hospitals . Police : Shooting motive unknown .