The UK Border Agency website says the centre - privately run by MITIE - has space for 216 beds.
It describes Campsfield House as a long-term centre for men, who are detained pending the outcome of their immigration case and possible removal.
One person is in hospital following a fire at an immigration detention centre, the Home Office has said.
Ten fire engines were called to the Campsfield House immigration removal centre in Kidlington, near Oxford, at 9pm last night.
A number of detainees are being relocated to other centres because of damage to the building, a Home Office spokesman said.
Thames Valley Police say a man who held his two-year-old twin daughters in an armed siege at a flat in Kidlington, Oxfordshire, has been arrested. The 38-year-old, who was believed to have a firearm, was Tasered by officers.
Police have extended the cordon around an ongoing armed siege in Kidlington, Oxfordshire by 100 yards to help ensure public safety.
Thames Valley Police confirmed they have the situation "fully in hand" after both twin two-year-old girls were released after being held hostage at a house in Oxfordshire.
The girls' father, who was holding them hostage in the property, is believed to still be inside the property, the Oxford Mail reported.
Local Policing Area commander Superintendent Christian Bunt said:"We have the area contained and we have firearms officers that are deployed and are currently dealing with this incident".
A two-year-old girl has been released after being held by her father in an armed siege at a property in Oxfordshire, Thames Valley Police said.
Up to 50 officers have been deployed to deal with an armed siege in Oxfordshire where a man is holding a two-year-old girl, the Oxford Mail reported.
Kidlington Neighbourhood Policing Team said: "This is a contained incident and neighbourhood officers will be carrying out patrols speaking to residents.
"We strongly advise you to avoid the roads in and around Morton Avenue as there will not be any access".
Thames Valley Police said it is "determined" to end a siege at a house in Oxfordshire "as soon as possible".
Local Policing Area commander Superintendent Christian Bunt said: