UPDATE: SWAT standoff has come to an end. Tear gas used to force suspect out.
There is a current SWAT call out in the 1100 block of South Lamar Boulevard.
The Austin Police Department said they were trying to serve a warrant and the man refused to come out of a location, which is when SWAT was called out.
Traffic has been shut down at Treadwell and South Lamar.
Police said nearby residences were evacuated. Police are telling the public to stay clear of the area.
This is a developing story.