Emergency crews are conducting a training exercise at William Head Prison in Metchosin today.
Crews started the drill at around 1 p.m. Wednesday.
The realistic exercise included reports of a structure fire at the institution in Metchosin, with patients inside the building.
It also included possible hazardous materials with a call going out for a Capital Regional District Hazmat team.
But this procedure was just a joint training exercise with no real fire.