Crews work at the scene of a shed fire near Blyth, Ont. on Tuesday, Oct. 1, 2019. (Scott Miller / CTV London)

Firefighters from three Huron County departments were called to the scene of a shed and barn fire near Blyth, Ont. late Tuesday morning.

The fire was brought under control, but closed a section of Blyth Road between Auburn and Blyth to allow water tankers to safely access the scene.

There had been concern about the fire's proximity to some propane tanks, but it was eventually brought under control.

No injuries have been reported, but three firefighters were treated for exhaustion due to the hot and humid conditions.

The fire is not considered suspicious.

ROAD CLOSURE: Blyth Rd CLOSED between Hoover Line & Marnoch Line #Auburn: Roadway closed due to a structure fire. #OPP and Fire on scene. ^aw pic.twitter.com/BbzlwW6Jkm

— OPPCommunicationsWR (@OPP_COMM_WR) October 1, 2019

FDNH Blyth is responding to a fire call between Blyth and Auburn. Motorists are reminded to yield for responding emergency vehicles.

— FDNH (@FDNHalerts) October 1, 2019