MESA, Arizona — A 35-year-veteran of the Mesa Fire Department died Tuesday morning while on duty. Firefighter Mark Keller, ...

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

A veteran Mesa firefighter died while on-duty Tuesday. Keller passed away in the morning, according to a statement from Mesa ...

PHOENIX — The Mesa Fire and Medical Department is in mourning after the death of longtime firefighter Mark Keller. Keller was ...

Mesa Fire Department mourns loss of firefighter Mark Keller, who died on duty. Mayor Freeman and Chief Cameli express deep ...

One vehicle, a Tesla Cybertruck, near the building was found to be on fire, and firefighters were able to extinguish the ...