Emergency services were called to the area about 10.20am on Friday after gunshots were reported. Witnesses said the alleged gunman, described as of Caucasian appearance and aged in his 20s, set fire to a stolen vehicle in a carpark near an apartment complex on Williams Parade before fleeing with a sawn-off shotgun. He evaded authorities via Union Street, his last known location, and remained at-large on Friday afternoon.
Nearby businesses and cafés have been placed into lockdown, along with Dulwich Hill Public School, as the search continues. A police helicopter and heavily armed tactical officers were deployed to the scene. Police have shut down the area as they comb the suburb.