They retook control of part of the town, including its main police headquarters, after heavy clashes with the ISIS militants, a provincial security source told Xinhua on condition of anonymity.
The battles left more than 20 militants killed, the source said without giving details about the casualties of the security members.
The security forces repelled an ISIS attack on a neighborhood adjacent to al-Baghdadi, which was the scene of fierce clashes two days ago, leaving at least four ISIS fighters killed, including two suicide bombers, the source added.
On Saturday, the security forces broke the siege of the neighborhood which is housing some 1,000 families of security personnel and government-backed Sahwa paramilitary group members. They have been trapped for about ten days and the families have suffered from acute shortage in food and drinking water.
In Iraq's northern central province of Salahudin, heavy clashes erupted near the town of Is'haqi, some 90 km north of Baghdad, between the security forces and dozens of ISIS militants who attacked a military base, leaving at least five extremist militants killed, a provincial security source said.