The DA's federal legal commission is set to deal with the issue after she tweeted that the legacy of colonialism was not only negative.
Maimane led a delegation from the opposition party to pay tribute to those who lost their lives in Sharpeville on Tuesday.
Sixty-nine people were shot dead on this day in the township in 1960, during a demonstration over pass laws.
The DA leader reiterated that his party doesn’t support Zille's views on colonialism.
“Our value and our project has always been to say out of the essence of apartheid, a free South Africa will come forward.”
