Pittsburgh police respond to shootout with squatter refusing eviction

An active shooting situation erupted in Pittsburgh when a sheriff's team tried to evict a resident.
The suspect, identified as an anti-government extremist, fired hundreds of rounds at officers.
Nearby homes were evacuated as shots continued throughout the day.
Two police drones monitoring the scene were shot down by the barricaded gunman.
State police are now leading the response to resolve the tense standoff.