Three students and a teacher received minor injuries after they were sprayed with chemicals during a science demonstration that went awry in the parking lot of a North York high school.

Toronto Fire Services says it happened shortly after 3 p.m. at the Royal Crown Academic School, located on Bayview Avenue, south of Finch Avenue West. Capt. Mike Strapko told The Canadian Press the science demonstration involved pouring drain cleaner into an empty soda bottle that contained water.

Strapko says the bottle ruptured, splashing its content on three students and a teacher.

Toronto Fire Services previously said five students and a teacher had been rushed to hospital.

Strapko says the teacher drove the students to hospital, where they were treated for minor injuries.

With files from The Canadian Press