Pakistan, Feb. 7 -- PESHAWAR - A police officer was martyred and a constable injured during a raid in Nowshera's Hakeemabad area, officials confirmed, as authorities continue operations against those involved in the deadly Islamabad imambargah suicide bombing.

Read More: Two 'terrorists' killed, two cops martyred in Nowshera operation

The late-night raid was conducted following leads on suspected facilitators of the Islamabad attack, in which at least 36 people were killed and scores injured during Friday prayers at the Imambargah Qasr-i-Khadijatul Kubra on the outskirts of the capital.

According to a senior police official, an exchange of fire broke out between law enforcement personnel and the militants during the operation. "Yes, a ...