Two loud explosions reported across the Harrogate borough and the rest of Yorkshire are believed to be sonic booms.
People took to social media after hearing the loud bangs shortly before 10pm this evening.
The bangs were reported to be heard from York to Harrogate and across Leeds this evening.
Many residents took to the streets after reports of windows shaking in their properties.
North Yorkshire Police confirmed on social media that the bangs were “sonic booms” from RAF Typhoon Jets.
A tweet from the force said: “Confirmation from RAF that loud bangs heard across the county were sonic booms from RAF Typhoon jets.
“No cause for concern.”
North Yorkshire Fire and Rescue Service said: “Reports of explosion heard in Selby area.
“After consulting with other emergency services this appears to have been caused by a sonic boom."
An RAF spokesman said: “Quick reaction alert Typhoon aircraft were launched today from RAF Coningsby to identify an unresponsive civilian aircraft.
“Communications were re-established and the aircraft has been safely landed.”
A number of people posting on Twitter about the noise reported hearing two bangs.
One Harrogate Advertiser reader commented: "Blimey, Sonic Boom just over Harrogate? At least two...."