Hundreds of inmates riot in city prisonpublished at 22:16 Greenwich Mean Time 16 December 2016
Riot officers enter HMP Birmingham after disturbances involving hundreds of inmates.
Read MoreSummary
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
Hundreds of inmates riot in city prisonpublished at 22:16 Greenwich Mean Time 16 December 2016
All four prison wings are now secure, BBC understandspublished at 22:13 Greenwich Mean Time 16 December 2016
Breaking
Caroline Gall
BBC News OnlineAll four wings at HMP Birmingham are now back under the control of prison staff and the specialist teams who entered the jail within the past two hours, the BBC understands.
Teams take back one wingpublished at 22:11 Greenwich Mean Time 16 December 2016
BreakingCaroline Gall
BBC News OnlineCrack teams inside the prison battling to take back one of the four wings say authorities have "recovered control" of one of them.
Image source, bbcThe disturbance started in two wings at about 09:00 GMT and later spread to two others.
Now, more than 12 hours later, after several specialist teams have entered the jail, progress is being made.
Extra staff arrive at HMP Birminghampublished at 22:11 Greenwich Mean Time 16 December 2016
Caroline Gall
BBC News OnlineThroughout the evening, extra HM Prison staff have been arriving at the riot-hit prison.
Just now, a team from HMYOI Aylesbury in Buckinghamshire turned up.
Extra officers from HMP Oakwood, near Wolverhampton, and HMP Rye Hill, in Northamptonshire, have been drafted in and several van-loads of officers from Staffordshire Police have just arrived.
Injured inmate removed from prison, BBC understandspublished at 21:27 Greenwich Mean Time 16 December 2016
There have been so far unconfirmed reports throughout the day that an inmate has been injured, possibly stabbed, during the trouble, but has been unable to get help because of the disturbance.
The BBC has been told an injured prisoner has now been "retrieved" and is conscious and talking in an ambulance.
HMP Birmingham 'is run with required amount of staff'published at 21:17 Greenwich Mean Time 16 December 2016
Caroline Gall
BBC News OnlineG4S has responded to claims staffing levels at HMP Birmingham are too low.
Some prisoners have claimed this and suggested it is part of a wider problem at the jail.
"The regime at HMP Birmingham has been run with the required amount of staff and without curtailment in recent weeks," a spokesperson said.
'Poor conditions partly to blame for riot'published at 21:10 Greenwich Mean Time 16 December 2016
The BBC has been contacted by several men claiming to be prisoners at the jail, who said poor conditions were behind the disturbance.
Image source, OtherThe men, who said they were calling from inside HMP Birmingham, cited inadequate staff numbers, poor healthcare and nutrition.
They said being on "lockdown" in their cells all day was a major factor that contributed to the trouble.
Watch: Police support unit enter prisonpublished at 20:48 Greenwich Mean Time 16 December 2016
Officers have now gone into HMP Birmingham in an attempt to stop the rioting which started almost 12 hours ago, at 09:00 GMT.
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End of twitter postVideo: 'Developing situation outside prison'published at 20:43 Greenwich Mean Time 16 December 2016
Ben Godfrey
BBC reporter at the sceneThe road outside HMP Birmingham has been cordoned off by police and filled with a line of police vehicles and officers with shields and helmets.
Media caption, The scene is escalating
It's clear that this is escalating to some extent now.
And it's possible that some rioters have been contained and this maybe is the final manoeuvre by police, who have been leaving it to the Prison Service and G4S.
Watch: Former inmate on prison's conditionspublished at 20:28 Greenwich Mean Time 16 December 2016
A former inmate of HMP Birmingham claims staff shortages are behind a multi-wing disturbance at the prison.
Media caption, A former inmate of HMP Birmingham has spoken of conditions at the site
Andrew Nicholls said prisoners were mostly locked in cells for 24 hours a day and Friday's disorder at the site was a "riot".
Who are the Tornado Team?published at 19:45 Greenwich Mean Time 16 December 2016
A Tornado Team have been sent to help deal with the riot at HMP Birmingham.
But who are they?
Image source, PAThey are a special group sent to prisons to bring riots under control and entered the Winson Green prison earlier in an effort to help.
G4S, the private company that runs the jail, has handed control of the riot response to the Prison Service.
From the scene: Staff being consoled by policepublished at 19:31 Greenwich Mean Time 16 December 2016
Ben Godfrey
BBC Midlands TodayFrom what I can see, fire crews and riot police are almost waiting to be deployed.
I have been told there may be a second fire inside the compound and behind me, are about 12 prison vans.
Outside the prison, there's about 50 officers.
I can sense something is happening inside and it looks like staff outside are being consoled by police.
'Fires burning' and sounds of 'men cheering'published at 19:22 Greenwich Mean Time 16 December 2016
The atmosphere outside the prison is still a dark one, reports the Press Association.
Fires started to burn and the sounds of men cheering, smashing, banging and firecrackers, could be heard from behind the high perimeter wall.
There is a heavy police presence around the outside of the sprawling jail complex, which sits in the middle of a busy residential and industrial area.
Inmates 'terrified as other prisoners tried to get on to their wing'published at 19:05 Greenwich Mean Time 16 December 2016
An inmate who is in a separate wing to the trouble said he and others were "terrified", as prisoners had tried to get access to their wing.
The prisoner, who was speaking through his solicitor, said other prisoners had tried unsuccessfully to force their way on to his wing.
The disorder was first reported at 09:00.
HMP Birmingham has been in lock-down all day and specially-trained riot prison officers have been sent in to try to regain control of the jail.
About 80 additional officers in placepublished at 18:51 Greenwich Mean Time 16 December 2016
The BBC understands about 80 additional prison officers, including the "Tornado Team", have been sent to the prison, on top of the jail's usual staffing levels.
Watch: Prison officers gear uppublished at 18:37 Greenwich Mean Time 16 December 2016
Here's some video from BBC Midlands Today's Ben Godfrey...
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End of twitter postSecurity chain broken, say sourcespublished at 18:27 Greenwich Mean Time 16 December 2016
Breaking
Monica Rimmer
Journalist, BBC OnlineSources say inmates have accessed a small amount of equipment which was being stored within a wing.
A security chain has been broken, but the perimeter is still secure, says the Press Association.
HMP Birmingham: Midlands Today live from outside prisonpublished at 18:15 Greenwich Mean Time 16 December 2016
Ben Godfrey
BBC Midlands TodayI'll be reporting live from outside HMP Birmingham, once known as Winson Green, where four wings are in lock-down tonight following a major disturbance.
Image source, OtherJoin me on Midlands Today at 18:30 on BBC One to find out how it all started and what the authorities are doing to regain control of the jail and the 1,450 prisoners inside it.
HMP Birmingham: 'Noise of firecrackers'published at 18:07 Greenwich Mean Time 16 December 2016
A reporter for the Press Association has said he has heard "the staccato noise and flare of firecrackers".
The trouble inside HMP Birmingham continues after prisoners took control of four wings.
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End of twitter postHMP Birmingham: Disorder "contained inside prison walls"published at 17:54 Greenwich Mean Time 16 December 2016
No keys to perimeter access points were taken by inmates at HMP Birmingham, West Midlands Police say.
A set of keys giving access to residential areas was taken from an officer were taken at the start of the day-long disturbance.
The Prison Service is leading the response to the disorder, with specially-trained West Midlands Police officers providing support.
Image source, West Midlands PoliceQuote MessageThe disorder is contained inside the perimeter of HMP Birmingham… no offenders have breached the perimeter. At this stage there are no West Midlands Police officers inside the prison."
Richard Moore, Birmingham Police Commander