RESIDENTS awoke to the sound of the Broadmoor Hospital siren this morning but police have reassured residents it was a "false alarm".

The siren blasted out its 'all clear' signal at around 7am this morning and remained on for approximately 25 minutes.

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Thames Valley Police Bracknell tweeted residents explaining it was a "false alarm".

They said: "INCIDENT: TVP are aware that the siren is currently sounding from Broadmoor Hospital.

"We can assure you this is a false alarm which will be rectified as soon as possible #TVPLive."

The force tweeted shortly before 2pm explaining the issue has been resolved by staff at Broadmoor Hospital. 

They also thanked residents for their patience.