Two people including a policeman were killed and eight others injured in a suicide bombing attack on Friday, hospital sources said.
Khalid Masood, the spokesperson of the Pakistan Institute of Medical Sciences, where all the injured people were shifted to, told local media that the injured included four policemen and four civilians.
According to Islamabad police, security in the capital was on high alert after a threat alert of bombing in the premises of the capital by the Tehrik-e-Taliban Pakistan (TTP) was issued by the authorities.
He said that in the wake of the recent surge of terrorism in the country, the capital police were vigilant and cautiously checking all vehicles entering Islamabad.
Deputy Inspector General of Police Sohail Zafar Chattha told the local media that there were a man and a woman in the vehicle when the explosion happened.
Pakistani Prime Minister Shahbaz Sharif condemned the attack and paid tribute to the police for showing valor against the terrorists.