A tanker truck carrying flammable material exploded Monday on a highway overpass near the northern Italian city of Bologna, killing at least two people and injuring up to 70 as it partially collapsed the raised roadway, police said. Some people were reportedly hit by flying glass as windows shattered in nearby buildings. Officials did not immediately know what kind of explosives were in the tanker, but the news agency ANSA said it was liquefied petroleum gas. The explosion reportedly came after a traffic accident. Videos show flames shooting up in the air after the explosion, replaced later by a thick black cloud of smoke. Aerial photos showed a gaping hole in the raised highway next to the tanker. (AP)