Baghdad (CNN) -- Gunmen killed at least five Iraqi police officers early Wednesday in the city of Ramadi, police said.
Two officers were ambushed at a checkpoint, according to police officials in Ramadi, a predominantly Sunni city in Anbar province, about 60 miles west of Baghdad. Three other officers were shot dead while they were sleeping in a room at the checkpoint, police said, adding that the gunmen used pistols with silencers.
The gunmen then fled the area, police said.
This is the latest violence targeting security officials. In August, more than 70 Iraqi security forces were killed, according to figures released by Iraq's Interior Ministry.
Violence had generally dropped in Iraq in recent years, compared with the middle of the last decade, when conflict between Sunnis and Shiites raged during the height of the Iraq war.
However, it hit a nearly two-year peak in July, with 325 deaths reported, according to the Interior Ministry. That's the deadliest single month since August 2010, when the toll was 426, the ministry said.
U.S. troops completed their withdrawal from Iraq in December.