Several people have reportedly been injured as a loud explosion was heard at Quetta's Zarghon Road near a private hospital in Pakistan today.
The Dawn reports that causalities are feared and several people have also been injured in the blast, which shattered the windows of many buildings nearby.
Rescue teams have reached the scene and the injured are being shifted to a nearby hospital and security forces are on the scene and collecting evidence.
Meanwhile, the police are still trying to confirm the source and nature of the blast.
The fresh attack comes after a suicide bomber on Monday targeted the emergency services ward at Quetta's Civil Hospital killing over 70 people and leaving scores injured.
Tehreek-i-Taliban Pakistan (TTP) splinter group, Jamaat-ul-Ahrar (JuA), claimed responsibility for the bombing which occurred at the gates of the building housing the emergency ward.