Six people were killed and 24 others were injured Monday in several explosions that rocked the Iraqi capital, a police source told Anadolu Agency.The source said that two pro-government fighters were killed and three others were injured when "an improvised bomb went off while a vehicle carrying pro-government [militia] forces was passing in the Arab Jabour area in southern Baghdad."Three other improvised bombs went off targeting public places in al-Ameriya, al-Sebaa and Sadr city across Baghdad, leaving four people dead and 21 others injured, the same source added.In recent years, bombings and shooting attacks-which often target civilians-have become a common occurrence in war-torn Iraq, especially Baghdad.Iraq has suffered a devastating security vacuum since June 2014, when ISIS overran the northern city of Mosul, the country's second largest city.