Security and medical sources said a bomber detonated his explosive vest at the mosque after Friday Prayers.
No group has so far claimed responsibility for the explosion but Daesh terrorists have been often blamed for such attacks.
The news comes a day after a series of bomb explosions and a shooting attack at residential neighborhoods in and around Baghdad claimed the lives of at least eight people and injured more than two dozen others.
The United Nations Assistance Mission for Iraq says a total of 1,119 Iraqis were killed and another 1,561 wounded in acts of terrorism, violence and armed conflict in March.
According to the UN mission, the number of civilian fatalities stood at 575. Violence also claimed the lives of 544 members of the Iraqi security forces.
A great portion of the fatalities was recorded in Baghdad, where 259 civilians were killed.
Gruesome violence has plagued the northern and western parts of Iraq ever since Daesh terrorists launched an offensive in June 2014, and took control of portions of the Iraqi territory.
The militants have been committing heinous crimes against all ethnic and religious communities in Iraq, including Shias, Sunnis, Kurds, and Christians. Iraqi army soldiers and fighters from allied Popular Mobilization Units are seeking to win back militant-held regions in joint operations.