An Islamic State-affiliated group claimed responsibility for a large car bomb attack at a national security building in Cairo that wounded dozens.
IS-Linked Group Claims Cairo Bombing

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Egyptians gather outside of a national security building after a bomb exploded in the Shubra el-Kheima neighborhood of Cairo injuring several people according to security officials, early Aug. 20, 2015.

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An Egyptian plainclothes policeman stands in the damaged national security building after a bomb exploded in the Shubra el-Kheima neighborhood of Cairo, injuring several people according to Egyptian security officials, early Aug. 20, 2015.

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An Egyptian woman walks near the damaged national security building after a bomb exploded early in the Shubra el-Kheima neighborhood of Cairo, Aug. 20, 2015.

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A wounded man arrives at a hospital after a bomb exploded near a national security building in the Shubra el-Kheima neighborhood of Cairo, Aug. 20, 2015.