Explosives in a building under construction ignited Thursday, ripping through a market in an upscale neighborhood in the eastern city of Lahore, killing eight people, officials said. It was not immediately clear whether the explosives were meant to be a bomb or were merely stored in the building. The news came as a shock to many in this nation, where a string of brazen attacks over the past two weeks have killed more than 125 people. The explosion was so powerful it shattered windows of nearby buildings and damaged vehicles parked outside a market in the Defense Housing Authority, said Rana Sanaullah, provincial law minister. He said nearly 30 people were wounded. Hours after the blast, the provincial Counter-Terrorism Department (CTD) said it found traces of explosives at scene. Mohammad Iqbal, spokesman for the CTD, told reporters that investigators were still trying to determine what was the purpose of storing explosive material in the building, and whether it was an improvised explosive device or remote control device. Lahore police operations chief Haider Ashraf said the explosion took place inside a building that was under construction and where laborers were working at the time. "Our focus at the moment is to rush the victims to hospitals and secure the scene of crime," he said, Earlier, live local TV footage showed smoke rising from a part of a restaurant that was under construction. The explosion was so powerful it littered the parking area outside the building with broken glass and debris. Dust and smoke covered dozens of cars parked outside, their windscreens and rear windows shattered.