At least 45 Islamic State militants were killed when they attacked military posts in Mosul city in Iraq, a military official said on Wednesday.Dozens of IS militants attacked Iraqi army posts on Tuesday near the militant-seized town of Qayyara, Xinhua quoted the official as saying."Our troops, backed by the US-led coalition aircraft battled the attack following several hours of fierce clashes," another official said.The clashes resumed at dawn on Wednesday when the IS militants attacked military posts near the village of al-Naser in the IS held city of Mosul, he said.Five Iraqi security personnel were injured in the clashes, he said.IS militants frequently attack security forces sent from Baghdad to the Makhmour military base beside the semi-autonomous northern region of Kurdistan in order to chase away IS militants from Mosul, 400 km north of the Iraqi capital of Baghdad.