Four people were injured in a hand grenade attack outside a hospital in Quetta on Sunday, police said.
According to police, the explosion occurred outside Yasin Hospital on Patel Road.
The injured were identified as Zubair Ahmed, son of Haji Abdullah Jan, a resident of Shaldara Madrasa Road; Wazir, son of Sardar Muhammad, from Madrasa Road; Abdul Rashid, son of Haji Ghazi, from Musa Colony on Sariab Road; and Abrar, son of Hafiz Abdul Razzaq, also from Musa Colony.
All four were taken to hospital for medical treatment. Their condition was not immediately known.
Pakistani forces cordoned off the area following the attack and launched an investigation.