US forces released more than 2,250 Iraqi detainees during the fasting month of Ramadan which ended this week, a US forces media advisor said Friday.
"The detainees were released from Krupper jail near Baghdad airport and the Bucca detention center in west of Basra," Kareem al- Sayab told Voices of Iraq (VOI) news agency.
Some 17,800 Iraqi prisoners are in US detention centres as well as foreigners, al-Sayab added.
In separate developments, Iraqi police killed a gunman and arrested four others during a house raid in Mosul, a spokesman for the Nineveh operations command, Khaled Abdul Sattar, said.
Mosul, is a city of Diyala province located 405 kilometres north of the Iraqi capital Baghdad.

Shares fell 2.1 per cent Friday on the Seoul stock exchange on general recession fears. South Korea's won dropped against the dollar.
When the Spirit rover landed on Mars five years ago, no one expected it or its sister rover Opportunity to make it to their first birthdays, let alone their fifth.
Amelie Mauresmo fell victim to a leg injury after less than half an hour on court Friday to hand over a 4-0 victory which put French compatriot Marion Bartoli into the final of the Brisbane International.
Mumbai-based movie Slumdog Millionaire won five prizes Thursday night at the Critics Choice Awards, cementing its position as a surprise favourite just as the Oscar season moves into high gear.
After the Taipei Zoo received two giant pandas from China, another Taiwan zoo said Friday it is seeking to receive a pair of pandas from China.