Media reports said seven people, including four policemen were others injured in the attack. Some participants of the rally were also among the injured.
Police said that PTI rally was not targted in the attack rather police was the target of attackers.
Police said that attackers hurled hand grenades during the attack.
Talking to media PTI Chief Imran Khan said that he was safe as he had left the venue shortly after the rally concluded.
It is to mention here that Mr Khan, during his speech in the rally , said he would shoot down US drones of he came to power in the country.