Both the officer and the suspect were hit by bullets.
Medics took one wounded officer to the hospital in serious condition. A second was also treated for an injury, it's unclear if the second officer was shot.
Now police are searching the area for a second suspect.
It happened late Thursday morning at an apartment complex in the West Valley near 67th Avenue and Indian School.
Two very busy roads were closed for several hours while authorities investigated.
Several schools were also placed into lockdown as a precaution.
Avoid the area of 6700 W Clarendon. We are searching for an armed subject who has been firing shots. pic.twitter.com/EJyjXNTp1S
— Phoenix Police (@phoenixpolice) March 26, 2015