A car bomb exploded near a crowded market in northern Baghdad, killing dozens of people Wednesday. The Islamic State group, also known as ISIS, claimed responsibility for the bombing — one of the worst single attacks in Iraq in recent times.

Several media outlets put the death toll from the attack at 50. However, the BBC reported at least 64 people were killed, while the Associated Press said 45 were dead. Police reportedly said that the bomb was placed in a parked car at the market area in the Shiite district of Sadr City. More than 80 people were also reportedly injured in the blast.

The Sunni militant group, which controls large areas of northern and western Iraq, has claimed responsibility for a number of attacks in recent weeks, including one last month in which more than two dozen people were killed.

In February, a twin car bombing that hit the Sadr City killed 70 people.