Jordanian terror suspect Abu Qatada could be freed on Monday as his bid for bail is heard.
Qatada, described by a judge as Osama bin Laden's right-hand man in Europe, will have his application for bail heard by a senior immigration judge in London.
The radical cleric is being held in a high-security prison while he fights deportation to Jordan over terror charges.
The hearing will be held before Mr Justice Mitting at the Special Immigration Appeals Commission (Siac) on Monday afternoon.
Qatada's 10-year battle against deportation is in the hands of the British courts after the 51-year-old lost his attempt to make a final appeal to Europe's human rights judges earlier this month.
His lawyers immediately applied for him to be released on bail as it looks likely that deportation proceedings will still take many months.
Abu Qatada could be freed on bail on Monday
The political situation in Jordan has also worsened in recent months, casting fresh doubt on the UK's ability to deport him, they claim.
Repeated failed attempts by UK governments over the last 10 years to deport the radical cleric have cost nearly £1 million in legal fees, Government figures show.
No figures have been given for how much Qatada has received in legal aid and some estimates put the cost of keeping Qatada in the UK, either in a high-security jail or closely monitored under strict conditions in the community, along with the legal costs of the fight to deport him, at more than £3 million.
Qatada, who is said to have wide and high-level support among extremists, was convicted in his absence in Jordan of involvement with terror attacks in 1998 and faces a retrial in his home country.
He also featured in hate sermons found on videos in the flat of one of the September 11 bombers.
Since 2001, when fears of the domestic terror threat rose in the aftermath of the attacks, he has challenged, and ultimately thwarted, every attempt by the Government to detain and deport him.
Home Secretary Theresa May
LONDON, ENGLAND - APRIL 19: Home Secretary Theresa May leaves the Houses of Parliament after making a statement defending the Home Office's handling of the Abu Qatada affair and possible error on dates on April 19, 2012 in London, England. Extreme Muslim Clerir Abu Qatada's deportation to Jordan is on hold after his lawyers filed an appeal to the European Court of Human Rights. (Photo by Matthew Lloyd/Getty Images)
Radical Islamist cleric Abu Qatada
Radical Islamist cleric Abu Qatada sits in a car as he leaves a Special Immigration Appeals Hearing at the High Court in London to go to jail after being re-arrested on April 17, 2012. British authorities re-arrested Abu Qatada today and began a fresh bid to deport him, saying they had resolved concerns about his treatment in Jordan. Abu Qatada was found guilty in his absence in 1998, but Jordan has promised to quash the conviction and give him a new hearing before civilian judges, with independent defence lawyers and the right to question witnesses, she said. AFP PHOTO / MIGUEL MEDINA (Photo credit should read MIGUEL MEDINA/AFP/Getty Images)
FILE - An undated 2005 image made by the British Prison Service showing Abu Qatada making a televised appeal from Belmarsh high security prison, in London calling for the release of hostage British Norman Kember in Iraq. The extremist cleric described as among Europe's leading al-Qaida operatives should not be deported to Jordan to face trial because of the risk evidence obtained through torture would be used against him, Europe's highest court ruled Tuesday, Jan. 17, 2012. After a 6-year legal battle, the European Court of Human Rights ruled that deporting Abu Qatada from Britain _ where he is in prison custody _ would "give rise to a flagrant denial of justice." (AP Photo/ H.M. Prison Service, File)
Theresa May, Mohammad Raoud
In this photo provided by Jordanian News Agency PETRA, Jordanian Interior Minister Mohammad Raoud, left, greets British Home Secretary Theresa May, right, upon her arrival to discuss the deportation of Muslim cleric Abu Qatada, in Amman, Jordan, Monday, March 5, 2012. British Home Secretary Theresa May said Monday that talks in Jordan had not produced a deal aimed at overcoming a European ban on deporting a radical Islamist cleric to the Arab country. (AP Photo/PETRA)