Three days after a bomb exploded at a mosque in suburban Minneapolis, a White House official told MSNBC that he isn't yet convinced the attack was not a "fake hate crime."

President Trump has not issued a statement — via Twitter or the White House press office — since the attack at Dar Al-Farooq Islamic Center took place.

On MSNBC, Sebastian Gorka, a top national security adviser to the president, said the president won't speak out about the bombing until "local authorities provide their assessment." (Minnesota Governor Mark Dayton has called the bombing "a criminal act of terrorism." The local police handed the investigation to the FBI.)

"When we have some kind of finalized investigation, absolutely — so, you know, there's a great rule, all initial reports are false, you have to check them and you have to find out who the perpetrators are," Gorka said in response to a question about whether the White House will address the bombing.

"We've had a series of crimes committed, alleged hate crimes, by right wing individuals in the last six months that turned out to actually have been propagated by the left," he said. "So let's wait and see and allow local authorities to provide their assessment. And then the White House will make its comments."

Asked why the president responded to the London terrorist attack in June immediately but has not addressed the bombing in Minnesota, Gorka said there have been "fake hate crimes," and so the White House is not responding to the attack.

"The question of who does it is a question. When you've had people, fake hate crimes in the last six months with some regularity I think it's wise, don't you, to find out what exactly is going on before you make statements when in fact they could turn out to be not who you are expecting," Gorka said.

Local Muslim leaders were astounded by Gorka's comments, given the president's track record of reacting immediately and emphatically to attacks in other parts of the world, calling them terrorism — sometimes even if local authorities are not confirming at the time that they are related to terrorism.

"I find this comment outrageous and offensive. Waiting for an investigation to be complete has not been something Trump has done when the perpetrators have been Muslim. This hypocrisy must be called out. What prevents the president from expressing sympathy for members of the house of worship that was attacked?" Asad Zaman, director of the Muslim American Society of Minnesota, told BuzzFeed News.

Trump has responded immediately to a certain kind of attack — those that reinforce anti-Islamic rhetoric. The "wait and see" approach appears to be reserved for attacks on Muslims.