Linn County, KS, firefighter Joshua Haynes, 35, died Wednesday from injuries he suffered while battling a fire in a medical facility in Pleasanton late Monday night.
Authorities said Haynes suffered life-threatening injuries while fighting a fire at a Pleasanton chiropractic clinic.
According to KMBC 9, other firefighters rescued Haynes and provided aid until he could be taken by air ambulance to a Kansas City hospital.
Haynes leaves behind three children.
The ATF and the Kansas State Fire Marshal's Office continue to investigate the cause of the fire.
