Officers regain control of prison
Specialist police teams take back all four wings at HMP Birmingham
Injured prisoner earlier 'retrieved' from jail and is conscious
Inmates contact BBC blaming 'poor conditions' for violence
Ben Godfrey
BBC Midlands Today
I'm outside HMP Birmingham and I've seen at least six prison vans arrive in past half hour.
The G4S have said they've handed control to the Prison Service with "immediate effect".
Hundreds of inmates in Birmingham are thought to be involved in a prison disturbance.
Trouble at the Birmingham jail, which started at 09:00, has spread to four wings.
Reinforcements have been sent in along with dog teams and ambulances.
Prisoners have been Tweeting images from inside the jail, which is run by the private company G4S. The photos have not been verified by the BBC.
Image source, OtherPolice carrying riot shields have been filmed arriving at HMP Birmingham where a disturbance by inmates has spread to four wings.
Read MoreThe prison, which is in the Winson Green area of Birmingham, was built more than 150 years ago.
A disturbance at HMP Birmingham has spread to four wings of the prison - trouble first broke out in the jail at 09:00
A Ministry of Justice spokesman said: "The Prison Service is managing the ongoing incident at HMP Birmingham.
"The situation is contained, the perimeter is secure and there is no risk to public.
"We are absolutely clear that prisoners who behave in this way will be punished and could spend significantly longer behind bars."
The G4S managing director for custodial and detention services, Jerry Petherick, has said they are handing over control of the ongoing trouble at HMP Birmingham to the Prison Service with "immediate effect".
"Our command team remains on site and our staff will be actively involved in the recovery of the affected wings."
Shadow justice secretary, Richard Burgon, said the disturbances at the Birmingham jail are "hugely concerning".
The Labour MP added: "It must be hoped that order can be swiftly and peacefully restored."
A specialist unit, known as the "Tornado team", has been brought into HMP Birmingham.
Trouble flared in the prison at 09:00 this morning and there are reports prisoners now control four wings of the prison.
Prison teams arrive at HMP Birmingham in Winson Green
HMP Birmingham in Winson Green has called in a specialist national team to restore control at four wings which are in lock-down.
The prison, which is run by the company G4S, holds more than 1400 convicts.
One man - who wishes to remain anonymous - spoke to the BBC about what he heard about the cause of the trouble.
He was waiting for his son to be released from the prison.
Quote MessageThe riots started over the lack of hot water for prison inmates - then a prison officer was called to the scene and he was threatened with a syringe and keys were stolen which led to ultimately to a full-scale riot, which has obviously led to all the incidents that have happened today."
Anonymous relative of prisoner
Monica Rimmer
Journalist, BBC Online
The BBC understands HMP Birmingham will bring in extra officers from Oakwood and Rye Hill to help control the trouble at HMP Birmingham.
Prisoners have control of four wings after trouble started at 09:00 this morning.
The disturbance at HMP Birmingham in Winston Green is ongoing. The trouble started at around 09:00 this morning.
G4S, who run the prison have said they are "continuing to respond to the incident".
Image source, PA/Richard VernallsG4S confirmed that they initially sealed off two wings, which included some administrative offices but said despite this the disturbance has since spread to two further wings.
All staff have been accounted for, the company say.
Quote MessageAdditional officers have arrived on site and we have deployed canine units within the prison. West Midlands Police helicopter is also in attendance. We are working with colleagues across the service to bring this disturbance to a safe conclusion."
Jerry Petherick, Managing director for G4S
A spokesman for the West Midlands Ambulance Service confirmed they were called to the prison at 12:23.
He said they currently have a hazardous area response team there, together with an ambulance and paramedic area support officer.
They added no more details are available about any casualties or injuries suffered.
Prison staff have withdrawn from two wings at HMP Birmingham after prison keys were stolen when an officer was "rushed" by inmates.
BBC WM
Here are some of the stories we are looking at:
- A 101-year-old man is found guilty of historical sex offences committed in the 1970s and 80s
- Disturbances involving prisoners at a jail in Birmingham may have spread to another two wings
- The number of families living in temporary accommodation for more than six weeks has jumped in the past year
The national chairman of the Prison Officers Association, Mike Rolfe, said the "serious incident" at HMP Birmingham is "another stark warning to the Ministry of Justice that the service is in crisis".
Quote MessageNational resources have been deployed to deal with this incident involving approximately 300 prisoners within two prison wings. No staff injuries have been reported and staff are currently monitoring the situation and awaiting national support, through mutual aid."
Mike Rolfe, Prison Officers Association
A disturbance by prisoners at HMP Birmingham has spread to two further wings, according to Press Association sources.
Two wings at the jail have already been sealed off after prison keys were stolen when an officer was "rushed" by inmates.
All prison officers have been accounted for at HMP Birmingham and wings N and P are currently sealed off, according to the Press Association.
Prison staff have withdrawn from the two wings after prison keys were stolen when an officer was "rushed" by inmates.
Prison academic Alex Cavendish says a specialist unit know as the "Tornado team" are now inside and the prison staff have 'withdrawn' from the prison.
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Monica Rimmer
Journalist, BBC Online
Image source, MATHEW WHITEHOUSEMan, 101, thought to be oldest defendant in British legal history, is guilty of 30 sex offences.
Read MoreMore details on how the ongoing disturbance at HMP Birmingham started are coming to light.
An "inside informant" has told prison blogger Alex Cavendish, the trouble started with lights being broken and inmates controlling fire hoses.
"While one of the officers was putting a prisoner in the cell he was threatened with what appeared to be a used syringe."
Mr Cavendish told the Press Association that while this officer was distracted by the threat, "another inmate came up behind, snatched the keys from his belt and snapped the security chain".
Inmates have since gained access to the offender management unit (OMU) and are burning their paper records and throwing computers out of the window, Mr Cavendish claims.