Republican presidential candidate Donald Trump has said he would "certainly implement" a mandatory database to track Muslims in the United States.
Speaking to NBC News between campaign events, Trump said: "I would certainly implement that. Absolutely.
"There should be a lot of systems, beyond databases. We should have a lot of systems," he added.
He added that Muslims would be required to sign up at various sites including mosques and that it was a question "of good management."
When challenged on how his plan was different to requiring Jewish people to register in Nazi Germany, Trump responded with "you tell me."
The issue first arose during an interview with Yahoo News on Thursday in which the billionaire said he did not reject the idea of requiring Muslims to register or have special ID cards noting their religion.
Earlier this week, Trump suggested that the country was "going to have no choice" but to close certain mosques because "really bad things are happening and they are happening fast."
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