Investigators were trying to identify the mutilated body of man suspected in bombings that killed six people and injured at least 26 in this eastern Pakistan city, but had yet to establish the motive for the attacks.
Interior Minister Aftab Khan Sherpao said that police are also hunting for another suspect in the bombings and have prepared a sketch of him, based on witnesses' accounts. The sketch was published in newspapers Friday, the AP says.
The bombs went off about 90 minutes apart Thursday at a public park and a bazaar in central Lahore. Police remained on high alert across the city Friday, with extra personnel on patrol and deployed at traffic intersections and in residential areas.
Provincial police chief Ziaul Hassan said police were also guarding Sunni and Shiite Muslim mosques as a "precautionary measure" against violence on Friday, the Muslim sabbath.
Pakistan is often hit by bombings motivated by sectarian hatred and opposition to the government's support of the U.S.-led war on terrorism.
There was no claim of responsibility for the latest attacks or indication whether it could be a reprisal for the arrests of several members of outlawed Islamic militant groups this month in Punjab province, of which Lahore is the capital.
Soon after the bombings, the government blamed "enemies of Pakistan," but Sherpao said it was too early to speculate on who was behind them.
Sherpao said one badly mutilated body retrieved from the scene of the first blast near the crowded public park could have been the person who planted it, under the seat of a bicycle. One person was killed and nine injured in the blast.
Newspapers in Lahore carried a sketch of a man suspected in the second bombing outside a jewelry shop that killed five people and wounded at least 17. He appears to be in his 30s, with short hair and a mustache.
Meanwhile, unidentified attackers shot dead a senior immigration officer as he left his Lahore home on Friday. The motive for the attack wasn't clear