Lahore police
At least 22 wounded in bomb blast in Pakistani city of Lahore
Haider Ashraf, deputy inspector general of police, said the truck was loaded with explosives and experts were combing through the wreckage.
Among those killed was a facilitator of a suicide bombing attack in February in Lahore, the statement said.
A 72-year-old British doctor is in prison in Pakistan for allegedly "posing as a Muslim".