Mesa firefighter passes away while on duty

Mesa firefighter passes away while on duty

Mesa Fire and Medical Department identified the firefighter who passed away as Mark Keller, who has been with the department for decades.

'Mark’s legacy will continue to inspire us all': Mesa firefighter dies

A 35-year veteran of the Mesa Fire Department died early Tuesday morning while on duty.

Mesa Fire Department mourns loss of Firefighter Mark Keller

The Mesa Fire Department is mourning the loss of Firefighter Mark Keller. Officials say Keller died Tuesday morning while on duty.