Hundreds of people were woken by a mystery loud bang in Merseyside in the early hours of this morning.
Homes across Kirkby and beyond reportedly had "lights flicker" and "windows rattle" after a massive bang woke residents up.
But police are baffled, as they have been unable to work out what caused it, the Liverpool Echo reports.
Dozens of people said they heard what sounded like an "explosion" in the early hours of this morning, around 1am.
Lesley Parr said her social media was full of people talking about the "total mystery", with many left scratching their heads as to what the sound was.
She said: "It was heard all over Kirkby, Fazakerley, Huyton, Stockbridge Village, Knowsley Village etc.
"I'm off Ribblers Lane, we saw flashing blue lights in the close next to us so my nosy boys took a walk over with the dog.
"The firemen said they've been sent in this direction and were just waiting for an update of a location, the police said the same thing too.
"Our house vibrated with how loud it was, others said their lights flickered and the windows rattled.
"It definitely sounded like an explosion though, I wonder if it was some freaky kind of thunder?"
On a number of local Facebook groups, many residents from Kirkby and elsewhere in Merseyside, such as Knowsley Village and Fazakerley, said they also heard the mysterious noise.
One resident posted: "What the hell was it? My heart is racing."
Another commented: "Any ideas what it was my light's went out twice in living room Southdene and then just fluttered on and off, on then off ect but stopped now!!!!!"
Another Kirkby resident said: "Hope they find out what it is. I’m top end of Northwood and heard it. Petrified to go back to sleep hope everything and everyone is ok."
Merseyside Police said that they received a call around 1am this morning.
They said officers carried out an extensive search of the area but nothing was found.
