An "incident" at Oakwood Prison near Wolverhampton has been "resolved successfully" according to a spokesman for G4S, the company that operates the facility.
This incident was resolved successfully at 2.10am.
Police and internal investigations will now take place. It would be inappropriate to comment further until these have been completed.
Oakwood Prison near Wolverhampton has been the scene of rooftop protests by prisoners last year and has been criticised by HM Inspectorate of Prisons.
In October 2013 and again in 2014, prisoners climbed on the roof of the facility, which can hold 1,600 inmates.
A report by HM Inspectorate of Prisons found inexperienced staff, high levels of violence and self-harm, and clear evidence of drug and alcohol use.
Jerry Petherick, managing director for G4S Custodial and Detention Services, said at the time that the company had taken steps to drive improvements.
Oakwood opened in April 2012 and holds a mixture of category C and D prisoners.
A spokesman for Staffordshire Police said the force was aware of the incident at the privately-run jail and was offering support and assistance to G4S.
Security firm, G4S, has confirmed that there is an 'ongoing incident' on a wing at Oakwood Prison.
“The situation is contained and we are applying standard procedures to manage the incident.
“It would be inappropriate to comment further at this stage."
No further information was available about what had triggered the problem.
There are reports of an 'ongoing incident' at HMP Oakwood in Featherstone. The prison is run by security firm G4S. More to follow.
A light aircraft has made an emergency landing in a field near Wolverhampton after running out of fuel.
The plane came down near Wolverhampton Halfpenny Green Airport, close to the village of Bobbington, near Stourbridge in the West Midlands.
Staffordshire Fire Service attended the incident but said it had already been dealt with when crews arrived at the scene.
Police have issued a new appeal for witnesses to the mosque bomb blasts as they continue to question two men in connection with the attacks.
There have been three bombs left at mosques in the Black Country.
We continue to investigate the circumstances surrounding the three explosions and are appealing to anyone who may have seen anything suspicious to contact us.
We do not underestimate the impact this will have on communities across the West Midlands.
The support of all communities has been fantastic with wider faith communities coming together to show solidarity.
Two men face further questioning today in connection with a series of explosions near mosques in the West Midlands.
The pair, both Ukrainian men aged 25 and 22, were arrested under anti-terror laws on Thursday in Small Heath, Birmingham, in relation to recent blasts close to mosques in Walsall and Tipton.
They are being held on suspicion of being involved in the commission, preparation or instigation of an act of terrorism.
Police in the West Midlands say they are hunting a serial bomber of mosques.
They have linked three attacks across the area in recent weeks.
One of the devices, which exploded close to a mosque in Wolverhampton last month, has only just been found.
From the West Midlands ITV News correspondent Juliet Bremner reports:
Police have confirmed that two Ukrainian men aged 22 and 25 have been arrested in relation to the explosions at mosques in Tipton and Walsall.
They are still being questioned on suspicion of being involved in the commission, preparation or instigation of an act of terrorism.