A Pakistani policeman checks a motorbike rider on road due to security high alert after twin bomb blast in southwest Pakistan's Quetta, Oct. 31, 2013. At least four people were killed and 14 others injured when a bomb blast followed by a gas cylinder explosion hit Pakistan's southwestern provincial capital of Quetta on Wednesday, said police officers. (Xinhua/Mohammad)
A Pakistani policeman checks a vehicle on road due to security high alert after twin bomb blast in southwest Pakistan's Quetta, Oct. 31, 2013. At least four people were killed and 14 others injured when a bomb blast followed by a gas cylinder explosion hit Pakistan's southwestern provincial capital of Quetta on Wednesday, said police officers. (Xinhua/Mohammad)
A Pakistani policeman checks a motorbike rider on road due to security high alert after twin bomb blast in southwest Pakistan's Quetta, Oct. 31, 2013. At least four people were killed and 14 others injured when a bomb blast followed by a gas cylinder explosion hit Pakistan's southwestern provincial capital of Quetta on Wednesday, said police officers. (Xinhua/Mohammad)
Pakistani policemen stand guard on road due to security high alert after twin bomb blast in southwest Pakistan's Quetta, Oct. 31, 2013. At least four people were killed and 14 others injured when a bomb blast followed by a gas cylinder explosion hit Pakistan's southwestern provincial capital of Quetta on Wednesday, said police officers. (Xinhua/Mohammad)
