Pakistan's officials have said that the extensive damage and loss of life in Quetta was caused by an Improvised Explosive Device (IED) strapped to a motorcycle.
Wazir Khan Nasir, deputy inspector general of police in Quetta, said: "The explosion was caused by an improvised explosive device fitted to a motorcycle."
Here the extent of the damage is being gauged by local people:
More top news
Adele surprised a fan with an accidental kiss on the lips when as she said hello at a show in Vancouver, Canada.
Hot sunshine and thundery downpours in places
Two people have been pulled from the sea and are being treated by paramedics on an East Anglian beach.