British police investigators were to tell a judge in a closed-door hearing why 22 suspects arrested on Aug. 10 should remain in jail without being charged for a thwarted plan to blow up as many as 10 America-bound passenger jets.

Of the 24 people originally arrested last week, one has been released, while another suspect will have a separate hearing. London's Metropolitan Police also took a 25th person into custody on Tuesday from the Thames Valley area west of London and announced they had raided two Internet cafes as part of their investigation.

Meanwhile, Pakistan has said it would likely extradite a British citizen also thought to be part of the plot. Although Britain has not yet formally requested Rashid Rauf be handed over, the man arrested in Pakistan last week is thought to have played a key role in the foiled terror plot.

"We do not have any extradition treaty at the moment but yes, because he is a British national, the possibility of his extradition remains there," Pakistan's Foreign Ministry spokeswoman Tasnim Aslam said according to the Associated Press.

In Islamabad, British High Commission spokesman Aidan Liddle confirmed it had yet to make such a request, although an official at the Home Office in London told the AP that Britain had already sought Rauf's extradition and that he could be flown to Britain within days. One of Rauf's brothers was also taken into custody in England.

Along with Rauf, who is thought to have connections to the al-Qaida terrorist network, Pakistan is holding 17 people in connection with the plot. Aslam reiterated Pakistani assertions that al-Qaida extremists in neighboring Afghanistan were behind the London terror plot. "In our view this was an al-Qaida operation -- al-Qaida based in Afghanistan," she told a press conference.

Afghanistan's Foreign Ministry has denied any Afghan connection to the plot, saying the country was no longer a safe place for al-Qaida to operate. Neighboring Pakistan and Afghanistan have been trading blame for months over which country is failing to get their rather lawless border under control. The mountainous region is considered to be widely under the influence of Muslim extremists including al-Qaida and the remnants of the Taliban.