A senior Pakistani police officer says gunmen have taken over parts of a hospital in a south-western Pakistan.
Fayaz Sumbal, the head of police operations in Quetta, said armed men captured different sections of the hospital complex on Saturday and were positioned on rooftops.
He said Frontier Corps troops, and police commandos have been called in.
An Associated Press reporter on the scene could hear intermittent gunfire as security officials took up positions around the building.
The attack happened after two bomb blasts in Quetta, the capital of Baluchistan, including one at the hospital.