UPDATE: Police have identified the suspect in the shooting of an officer as Jordan P. Fricke, 26.
Fricke has not been formally charged.
MILWAUKEE (AP) -- Police are collecting evidence at a Milwaukee home where a police officer was fatally shot while serving a warrant.
Officers have cordoned off part of the residential neighborhood where 35-year-old Officer Matthew Rittner was killed Wednesday.
The 17-year police veteran was shot as members of Milwaukee's Tactical Enforcement Unit served a search warrant on someone suspected of illegally selling firearms and drugs. Investigators say a 26-year-old suspect fired several rounds. He was later arrested.
Police Chief Alfonso Morales says investigators hope to wrap up their work at the scene Thursday. Rittner's autopsy also is expected to be completed Thursday.
Ritter is the third Milwaukee police officer killed on the job in the last eight months. The department had previously gone more than two decades without a line-of-duty death.