Fire alarm at Mattress Firm on Mill Street Heard on: Worcester County Fire and EMS - Northern 00:10 00:00 252 Mill Street, Mattress Firm, fire alarm activation. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 252 Mill Street, Mattress Firm, fire alarm activation. 00:06 Engine 3, Engine 4, Ladder 1, 252 Mill Street, fire alarm activation. 2026-10-22 02:19 UTC Fire Mill St, Leominster, MA 01453 View on map