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Iraqi authorities raise death toll from Baghdad hotel attacks to 15 people

  • Civilians and security forces inspect the aftermath of a car bomb attack in the parking lot of Babylon  hotel in Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)

    Civilians and security forces inspect the aftermath of a car bomb attack in the parking lot of Babylon hotel in Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)  (The Associated Press)

  • Civilians and security forces inspect the aftermath of a car bomb attack in the parking lot of Babylon  hotel in Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)

    Civilians and security forces inspect the aftermath of a car bomb attack in the parking lot of Babylon hotel in Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)  (The Associated Press)

  • A policem truck is parked in front of Babil hotel after it was hit by a car bomb in Karrada neighborhood, Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)

    A policem truck is parked in front of Babil hotel after it was hit by a car bomb in Karrada neighborhood, Baghdad, Iraq, Friday, May 29, 2015. Two separate car bombs inside parking lots of two downtown hotels have killed and wounded civilians late Thursday, authorities said. (AP Photo/Hadi Mizban)  (The Associated Press)

Authorities in Iraq have raised the death toll from bombings that targeted two top hotels in Baghdad to 15 people, with another 42 wounded.

The double attack occurred late Thursday when two separate car bombs went off in the parking lots of the Cristal, formerly Sheraton, and Babil hotels.

Initial reports said 10 people were killed and 27 wounded, but the casualty figures rose overnight.

All officials spoke on condition of anonymity because they are not authorized to speak to the media.

Nobody claimed responsibility, but Iraq witnesses almost daily attacks that have been frequently claimed by the Islamic State group — which seized large swaths of the country during a blitz last year.