LAHORE: Investigators have arrested a suspected facilitator of the suicide bomber who attacked the police check post on Wednesday night. Sources say the arrest was made during an operation from the Walled City area of Lahore. According to a private TV channel, the suicide bomber and his facilitator belonged to Afghanistan and Swat respectively. Earlier the banned Tehreek-e-Taliban Pakistan (TTP) claimed responsibility for the suicide bombing. TTP spokesman Muhammad Khorasani in a video message said their member Mujahid Yaqoob Ghazi attacked the police check post after the Isha prayers to take revenge of the killings of their associates in Punjab.