They've already killed two security personnel during the siege in Bannu.
在班努的围攻中,他们已经杀死了两名安全人员。
英语百科
Bannu
Bannu (Urdu:بنوں; Pashto:بنو[ˈbanu]; local Pashto dialect: Bana or Banigul, Avestan Varəna), is the principal city of the Bannu District in southern Khyber Pakhtunkhwa, Pakistan. Bannu was once a British military base used for action against Afghan border tribes.