Four killed in bomb attack at luxury Pakistan hotel

A police officer and rescue workers arrive at the site of a bomb blast in Quetta (Arshad Butt/AP)

A powerful bomb has exploded in the car park of a luxury hotel in the south-western Pakistani city of Quetta, killing at least four people and wounding another 12.

Police said rescuers took victims from the five-star Serena Hotel to nearby hospitals and footage on Pakistan news channels showed burning cars.