Is It True That The Only Japanese Spies Found In Canada Were All Coacaisian?

I am doing an essay on Japanese Internment In Canada Justified Or Not? and I read somewhere that canada interned all people of japanese racial origin becuase they feared that there were spies in canada and there was going to be an attack on can, after pearl harbour and they found 2 spies or something, and they were both caucasian and not even aisan. I cant find that info and I need to know if its true because I want to put it in my essay. Please help ASAP my essay is due in 2 days!