LONDON — Three relatives of the former leader of Al Qaeda, Osama bin Laden, were among four people killed when a private jet crashed on landing in southern England, British police confirmed Saturday.

The Hampshire Police said that formal post-mortems were still being conducted, but that the victims were believed to be “the mother, sister and brother-in-law of the owner of the aircraft, all of whom are from the Bin Laden family.” It said all three were Saudi citizens who were visiting Britain on vacation. The plane’s Jordanian pilot, Mazen Salem al-Dajah, also died.

Arab news media and NBC News named the relatives as Osama bin Laden’s stepmother, Rajaa Hashim, his sister Sana bin Laden and her husband, Zuhair Hashim.

Prince Mohammed bin Nawaf bin Abdul-Aziz, the Saudi ambassador to Britain, offered his condolences to the Bin Laden family, which owns a construction company in Saudi Arabia.