Reuters reports: Residents of a town north of Baghdad found 12 corpses with execution-style bullet wounds on Monday, after fighting between rival Sunni insurgent groups that could eventually unravel the coalition that seized much of the north and west of the country.

The incident points to an intensification of infighting between the Islamic State and other Sunni groups, such as supporters of former dictator Saddam Hussein, which rallied behind the al Qaeda offshoot last month because of shared hatred for the Shi’ite-led government in Baghdad.

Police in Muqdadiya, a town 80 km (50 miles) northeast of the capital, said residents from the nearby town of Saadiya found the 12 corpses on Monday after intense fighting overnight between Islamic State fighters and the Naqshbandi Army, a group led by Saddam allies. [Continue reading…]