YOUNGSTOWN  Youngstown firefighters responded to a possible fire at a downtown courthouse Tuesday night.

Crews arrived at the Thomas D. Lambros Federal Building and United States Courthouse around 7 p.m. after receiving calls about a smell of smoke inside.

Officials on scene did not find any flames and said the smell emanated from an air conditioning unit that began to smoke.

A maintenance team was called to check the AC unit.

There were no reports of any damage or injuries.