A suicide bombing rocked a Shia mosque in the central part of Iraq’s capital Tuesday, killing at least 20 people and injuring 43 others, a Baghdad police source said.

The bomber entered the Shiite mosque in the Shorja market in downtown Baghdad as worshippers were heading inside to attend noon prayers, a police officer said.

Also in Baghdad, a bomb went off in an outdoor vegetable market in the eastern Shiite neighborhood of Sadr City, killing two civilians and wounding five others, police said. And two policemen were killed and six other people wounded when a bomb hit a police patrol in the southern Dora district, another police officer said.

Three medical official confirmed causality figures.

Last year was the deadliest in Iraq since 2008, with more than 8,800 people killed, most of them civilians, according to the United Nations.