White House official Sebastian Gorka said on Wednesday that he's not convinced yet that the bombing of a mosque in suburban Minneapolis was not a 'fake hate crime'.

Top adviser Gorka was answering questions on MSNBC when he asked why President Donald Trump had not yet issued a statement on Saturday morning's attack on Dar Al-Farooq Islamic Center in Bloomington.

Minnesota Governor Mark Dayton called the bombing a 'criminal act of terrorism' as the FBI office said that investigating the incident was their top priority.

Gorka, however, said that Trump would not make a statement until 'local authorities provide their assessment'.

Top adviser Sebastian Gorka was asked why President Trump had not yet issued a statement on Saturday morning's attack on Dar Al-Farooq Islamic Center in Bloomington, Minnesota. He said Trump would not make a statement until 'local authorities provide their assessment'

An explosion damaged a room and shattered windows at the Dar Al Farooq Islamic Center in Bloomington, Minnesota, as worshippers prepared for morning prayers early Saturday

Minnesota Governor Mark Dayton called the bombing a 'criminal act of terrorism' as the FBI office said that investigating the incident was their top priority

'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.

He added: '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.

'So let's wait and see and allow local authorities to provide their assessment. And then the White House will make its comments.'

When asked why Trump immediately responded to the London terrorist attack in June but had not mentioned the Minnesota bombing days after the incident, Gorka questioned if it was a 'fake hate crime'.

'The question of who does it is a question,' Gorka said. '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,'

When asked why Trump immediately responded to the London terrorist attack in June but had not mentioned the Minnesota bombing days after the incident, Gorka questioned if it was a 'fake hate crime'

People attend a rally at the Dar Al-Farooq Islamic Center on Tuesday, three days after the mosque was bombed

Dar Al-Farooq Islamic Center Executive Director Mohamed Omar said that the mosque does not have outside security cameras

Local Muslim leaders called his comments 'outrageous and offensive', according to Buzzfeed News.

Meanwhile, the head of the Minneapolis FBI office said on Monday that the investigation into the bombing is their top priority and they going to focus every available resource on the case until it's solved.

Special Agent in Charge Rick Thornton said in a news release that he can't answer certain questions due to the ongoing investigation. He says it will take time to develop the information necessary to determine who carried out the Saturday's attack and why.

He did say, however, that the blast appeared to have been caused by an improvised explosive device and that the FBI had recovered pieces of it at the scene.

Officials are currently looking for a person responsible for the explosion.

Minnesota Gov Mark Dayton spoke at a news conference following the bombing, calling the incident an 'act of terrorism'

A group of women take part in afternoon prayers led by Dar Al Farooq Islamic Center Executive Director Mohamed Omar outside the police tape surrounding the center on Saturday

'At this point, our focus is to determine who and why,' Mr Thornton said at a press conference. 'Is it a hate crime? Is it an act of terror?'

Nobody was hurt in the explosion, which happened just before morning prayers at the Dar Al-Farooq Islamic Center in Bloomington.

The mosque does not have outside security cameras, which might have proved helpful in the investigation.

Mohamed Omar, executive director of the Dar Al-Farooq Islamic Center, told The Associated Press on Monday that his community doesn't have the money for security cameras.

He also said they didn't receive any threats before Saturday morning's attack or claims of responsibility afterward.

The blast damaged the imam's office across the hall from the worship space.

Officials say witnesses saw someone throw something from a truck or van before the blast and saw a vehicle speed away afterward.

The FBI hasn't said if it has arrested anyone or if it is pursuing any suspects.