The explosion in the capital of the restive Baluchistan province is believed to have been caused by a vehicle bomb, according to the Daily Pakistan newspaper.
He said 15 people had been wounded.
The explosion took place in front of the office of the provincial police chief, but it wasn't clear if either he or the compound was the target, Khan added. The formidable blast threw the organs of human beings all around.
Balochistan government spokesman Anwar-ul-Haq Kakar said that the explosion took place at 9:00 am when the police officers were checking the suspected auto.
The area is usually constantly supervised with heavy presence of security personnel. At least 11 people including five policemen were killed and 20 others injured including two children in a suicide blast near a police check post in Quetta Friday morning, officials said. Rescue measures are underway to ferry the injured victims to medical facilities. He said officers were still trying to determine whether it was a auto bomb.
Emergency has also been declared in different hospitals.More news: Iran-made drone downed in Syria
Civil Hospital spokesman Dr. Wasim Ahmed confirmed at least 11 bodies and 16 injured were brought to the hospital.
Immediately after the explosion, security of Civil Hospital was tightened with police officers deployed at all entry and exit points of the premises. Of the injured, nine were said to be policemen and included a girl around 10 years of age. Photo: Geo NewsSecurity officials told Geo News nature of the blast has not been ascertained yet.
Speaking to media on the blast site, CCPO Quetta Abdur Razzaq Cheema said around 9am, a vehicle coming from Gulistan Road was intercepted; however, it did not stop and drove off to Mission Road.
However, authorities have not officially commented on the exact nature or the cause of the blast yet.
No gunfire was reported following the bombing.