Baghdad (CNN) -- At least nine people were killed and 80 others wounded when a string of car bombs exploded in Shiite neighborhoods across the Iraqi capital of Baghdad on Wednesday, police said.
Violence between Shiites and Sunni Arabs have plagued Iraq for years, and there has been an uptick in attacks and tensions in recent weeks.
This latest violence comes after gunmen targeted liquor stores in eastern Baghdad on Tuesday evening, killing 12 people, police said. The neighborhood, Zayouna, is a mixed Sunni-Shiite neighborhood, but has been considered a hot zone for Sunni insurgents. When Saddam Hussein led Iraq, many high-ranking army officers lived there.