Burlington City Hall is under a hold and secure following a threat received earlier in the day.
In a social media post, the City of Burlington said it is actively monitoring the situation and working with Halton Regional Police to resolve the matter.
City Hall will remain closed for the rest of the day.
Police in Halton Region say they were called to the municipal building around 2 p.m. after a report of a threat was received.
The nature of the threat was not revealed.
Police say there are no injuries and no arrests as they continue to investigate.