(Aljazeera) -- A second deadly explosion has struck Baghdad, killing at least seven people and wounding 30, according to security sources and witnesses.

The blast at Al-Shahada Bridge came hours after a suicide car bomber in the Karrada district killed at least 15 people and wounded dozens who were gathered at an ice cream shop.

The second blast on Tuesday was also a car bomb attack, security officials.

ISIS claimed responsibilty for the first attack, which came as the Muslim holy month of Ramadan got under way.