Officials: All gunmen have been killed

Afghan security forces surround the Park Palace Guest House in Kabul, Afghan State. [Photo: Courtesy]

At least 22 people are now known to have died when Taliban militants slaughtered guests at a luxury Kabul hotel, Afghan officials said Monday, as fears grew that the attackers may have had inside help.

Authorities warned they were still investigating how militants breached security, which was taken over by a private company three weeks ago, at the landmark Intercontinental Hotel late Saturday.