Asked by a reporter if he sees an increase in white nationalism, Trump said: "I dont really. I think its a small group of people."
Trump also said he had not seen a manifesto in which the suspected gunman denounced immigrants and praised Trump as "a symbol of renewed white identity and common purpose."
Trumps comment come after news that at least 49 people were killed and more than 40 people are being treated for injuries after at least one shooter opened fire at two mosques in Christchurch, New Zealand on Friday, according to New Zealand police.
A 28-year-old man was charged with murder and is set to appear in Christchurch District Court, while two others remain in police custody.