Islamabad, Pakistan ? Pakistan has handed over to U.S. authorities about 20 Arabs arrested last week in raids on suspected al-Qaida hideouts, a senior intelligence official said Sunday.

One of the detainees resembles a key lieutenant of Osama bin Laden, police officials say. U.S. and Pakistani authorities are trying to determine if the suspect is Abu Zubaydah, who sources say had taken effective control of al-Qaida after the collapse of Taliban rule in Afghanistan.

The intelligence officer told The Associated Press that the Arabs would be flown to the U.S. naval base at Guantanamo Bay, Cuba, where hundreds of al-Qaida and Taliban prisoners are detained. The prisoners were believed to have been sent to Jacobabad air base in southern Sindh province, which is being used by the U.S. military for its campaign in Afghanistan.

The Arabs were among 60 people arrested Thursday in raids in the cities of Faisalabad and Lahore.

Agents seized weapons, laptop computers and other documents. One suspect was killed and five people, including a policeman, were wounded.

The intelligence official said authorities discovered the location of the hideouts after interrogating seven people – Pakistanis, Ugandans, Sudanese and Mauritanians – who were arrested this month along the Afghan-Pakistan border.

According to Pakistani and Afghan sources, Zubaydah, who is about 30, fled to Pakistan after the Taliban collapse and took operational control of al-Qaida because it was too dangerous for bin Laden and his second-in-command, Ayman al-Zawahri, to operate freely.

U.S. authorities suspect Zubaydah played a major role in numerous al-Qaida operations, including the Sept. 11 attacks and the “millennium plot” to bomb Los Angeles International Airport in late 1999.

Meanwhile, police announced the arrest Saturday of four Sudanese men who were receiving pilot training at a private aviation club in Peshawar.

A senior police official, speaking on condition of anonymity, said the four were suspected of links with extremist Islamic groups. It was unclear what charges the men might face.