The 27-year old was shot and killed while investigating reports of gunfire in Chicago's Englewood neighborhood.
Valadez had been on the police department for three years.
Two suspected gang members are now charged with his murder.
The 27-year old was shot and killed while investigating reports of gunfire in Chicago's Englewood neighborhood.
Valadez had been on the police department for three years.
Two suspected gang members are now charged with his murder.