A powerful car bomb detonated in a residential area in Pakistan's capital on Friday, killing two suspected militants and an officer.

Iran PressAsia: A policeman was martyred, two terrorists were killed and at least six people including four police officers and two civilians  were injured in a suicide blast in Islamabad’s I-10/4 sector on Friday, police officials said.

Shortly afterwards, the Islamabad police declared a "red alert” in the city.

Deputy Inspector General of Police Sohail Zafar Chattha said the police spotted a "suspicious vehicle” with a man and a woman aboard at 10:15am in the area.

"When the police stopped the vehicle, the couple came out of the car. The long-haired man, while being checked by the officers, went inside the vehicle on some pretext and then detonated himself,” he told reporters.

"The vehicle used in the blast was registered in Chakwal. The car entered Islamabad from Rawalpindi and was packed with explosives and headed for a high-value target in the capital,” he said. Sanaullah added that had the car reached its target, it would have caused heavy losses.

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