President Donald Trump used Twitter on Thursday night to promote an interview in which he explained how "tough" his supporters could get – and deleted the tweet Friday morning after the New Zealand mosque shootings.

In his chat with the Breitbart News Network, Trump said: "I can tell you I have the support of the police, the support of the military, the support of the Bikers for Trump – I have the tough people, but they don’t play it tough — until they go to a certain point, and then it would be very bad, very bad."

The White House did not comment on Trump's deletion of the tweet.