Nine people have been killed and over twenty others injured following a bomb blast that ripped through a police checkpoint in the eastern Pakistan.

The incident is reportedly to have happened late Wednesday when police were changing guards at the police checkpoint outside an annual religious congregation in Raiwind.

Deputy Inspector of police confirmed with local media and said police were the main target of the attack.

“I can at the moment say that police was the target,” said police Inspector Ashraf.

The police inspector told newsmen that the attackers had used a motorcycle as source of transport during the attack.

They have since not been identified.

The Punjab Province, where the attack was carried out has traditionally experienced more calm compared to the rest of the Pakistan especially in tribal areas bordering Afghanistan.