Pakistan ? Suicide attackers shot their way past guards and set off a massive blast outside a luxury hotel where foreigners and well-to-do Pakistanis mixed, killing at least 11 people and wounding 70, officials said.

The bombers struck the Pearl Continental Hotel late Tuesday at about 10 p.m., when nightlife was still in swing. The attack reduced a section of the hotel to concrete rubble and twisted steel and left a huge crater in a parking lot.

The blast came a week after Taliban leaders warned they would carry out major attacks in large cities in retaliation for an army offensive to reclaim the nearby Swat Valley region from the militants. No claim surfaced immediately for the bombing in Peshawar, the northwest’s largest city with about 2.2 million people.