BAGHDAD, June 7 (Xinhua) -- At least 20 people were killed and 80 others wounded in car bomb and roadside bomb attacks in the capital Baghdad on Saturday night, police and medic sources told Xinhua.
The deadliest bombing occurred in Bayaa district in southwestern Baghdad, killing five people and wounding 13 others.
All bomb attacks happened in a short period of one hour and were mainly focused on Shiite neighborhood around Baghdad. So far no group has claimed responsibility for the attacks. The Shiite community is frequently targeted by Sunni Islamist militants who have been regaining momentum across the country over the past year.
Earlier in the day, a total of 36 people were killed, mostly security troops, in two major battles and separate insurgents attacks across the country.
Also on Saturday gunmen stormed the campus of Anbar University in Iraq's western Anbar province, trapping hundreds of students and teachers in school buildings. Iraq security forces later retook control of the campus after fierce battles, leaving at least nine militants killed.
Iraq is witnessing some of its worst violence in recent years. According to the UN Assistance Mission for Iraq, a total of 8,868 Iraqis, including 7,818 civilians and civilian police personnel, were killed in 2013, the highest annual death toll in years.