A Richmond Hill teacher is under investigation by the York Region District School Board after a Twitter account featuring his photo posted messages accused of being "racist" and Islamophobic.

More than five students at Richmond Green Secondary School uncovered an account, @firstatheist, they claim belongs to English teacher Michael Marshall, who authors @marshallisaboss, an account where he publicly identifies himself.

"Decided that I am way too racist to be a teacher #theycantbreathe" read one tweet from @firstatheist, which was deactivated some time between Wednesday night and Thursday morning.

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