Following the killing of Taliban leader Mullah Dadullah, an Islamic suicide bomber struck back—at a group of people in a restaurant: Bombing in Pakistan border area kills 25.

PESHAWAR, Pakistan - A suicide bomber with a warning to spies for America taped to his leg attacked a crowded restaurant Tuesday near the Afghan border, killing at least 25 people days after a relative of the Taliban’s slain commander was arrested there, officials said.

The explosion deepened instability in a country still reeling from deadly political riots over the weekend in its commercial capital, Karachi. The attack appeared unrelated to that unrest, but rather the work of an Islamic militant.

Provincial police chief Sharif Virk said the message taped to the severed leg of the bomber said spies for America would meet the same fate as those killed and included the Persian word “Khurasan” — often used in militant videos to describe Afghanistan.

The owner of the hotel restaurant, who was killed in the bombing, was an Afghan with ties to an anti-Taliban warlord, and the restaurant itself was popular with many Afghans.