The blast occurred at around the same time that three attackers tried to storm the Chinese consulate in the southern city of Karachi. Two policemen and the three attackers were killed.
The Karachi attack was claimed by a separatist insurgent group called the Balochistan Liberation Army, and did not appear to be connected to the attack on the market in the northwestern region of Orakzai.
Orakzai was formerly a semi-autonomous part of Pakistan’s ethnic Pashtun tribal area along the Afghan border. The region was for decades a refuge for Islamist militants fighting in Afghanistan, and more recently against the Pakistani state. The Pakistani
military stepped up operations along the border in 2009 and has managed to clear some areas of militants. The tribal areas were incorporated into the province of Khyber Pakhtunkhwa in May.