At least nine people were killed and 30 injured when a suicide bomber detonated his explosive vest in a predominately Shia Muslim district of Baghdad on Tuesday, police and medical sources said.
The blast targeted a commercial street in the eastern Baghdad al-Jadida area of the Iraqi capital, they said, adding that the death toll could climb further.
Islamic State has intensified bomb attacks in government-held areas of Iraq this year as it loses territory to US-backed Iraqi government forces and Iranian-backed Shia militias.
The ultra-hardline Sunni group claimed a truck bombing in July that killed at least 324 people in the Karrada shopping area of Baghdad - the deadliest single attack in Iraq since the US-led invasion that toppled Saddam Hussein in 2003.
The group continues to control vast areas in northern and western Iraq, including the city of Mosul, captured in 2014.