[JURIST] The US military Saturday released a second group of 500 Iraqi detainees from Abu Ghraib prison [JURIST news archive] following an earlier release of more than 500 detainees Monday [JURIST archive], and a release of another 1.000 [JURIST report] at the end of August. The military has not said whether the releases are directly connected with the pending October 15 national referendum on the draft Iraqi constitution [JURIST news archive]. The latest two rounds of releases fulfill a plan to free more than 1,000 detainees [US Central Command press release] before the Muslim holy month of Ramadan [Wikipedia backgrounder]. Those chosen for release had admitted to their crimes, and had not engaged in serious, violent activity. AP has more.