UPDATE: Inside Mosul: June 21, 2017

Editor's Note: Iraq Oil Report gathers daily updates on security and humanitarian developments inside Mosul city and surrounding IS-held areas in Ninewa province from a network of local reporters, residents, resistance fighters, and IS militants. Because of the physical risks associated with information-gathering in these areas, these reports are not comprehensive, and many cannot be immediately confirmed via multiple, reliable sources. Nonetheless, we believe there is a significant public interest in publishing this reporting.

The Custom Research Service of Iraq Oil Report also collects hard data on violence in IS-held territory, compiles maps and analysis of trends, and tracks economic indicators including commodity prices. For more information, email Custom Research Service Director Jared Levy at CRS@iraqoilreport.com.

Iraqi military activity

Between 3:30 a.m. and 6:30 a.m., the Iraqi Army's 2nd special operations division, 16th division, and counter terrorism service (CTS) clashed with IS militants in the Hara al-Yahud, Khatoniya and Kornish areas of Old Mosul. Tens of militants lay down their arms and surrendered to Iraqi forces. During the day's fighting, 14 IS militants were killed and three VBIEDs, four machine guns, and two mortar positions were destroyed. (Source: CTS officer)

Between 6:30 a.m. and 10:00 a.m., the Federal Police's 5th division clashed with IS militants in the Sarjkhana, Ghazi Street, Nujaifi Street, and Sayagh market areas of Old Mosul. They also completed clearing militants from Shefa'a neighborhood and the Wednesday market. During the day's fighting, 30 IS militants were killed and four VBIEDs, four mortar positions, and two anti-aircraft weapons were destroyed. (Source: federal police officer and CTS officer)

At around 2:30 p.m., the Iraqi Army's 2nd special operations division, 16th division, and counter terrorism service (CTS) liberated Siha area and liberated al-Nouri Mosque and al-Hadbah minaret in Old Mosul. In the battle for the mosque, 22 IS militants were killed and two VBIEDs, three mortar positions, and two anti-aircraft weapons were destroyed. (Source: CTS officer)

At 7 p.m., the Iraqi Army 2nd special operations division and counter-terrorism service with Iraqi military aviation cover pushed toward the center of Old Mosul in battle against IS militants. As it approached 60 meters from the al-Nouri Mosque and al-Hadbah minaret, IS militants detonated explosives placed in and around the sites. Dozens of civilians held hostage at the sites were killed. (Source: CTS officers)

IS activity

At around 11:30 a.m., IS militants executed 150 civilians in Bab Lakash area for attempting to flee IS-controlled territory. (Source: 5th Division officer)

(Map created by the Institute for the Study of War)

IOR's Special Report: Inside Mosul is sponsored by our advertising partner, NAMEA Group, a consulting firm providing a strategic approach to successful investment in Iraq -- from opportunity to contract to payment.

Airstrikes

At around 12:00 p.m., airstrikes targeted an IS vehicle and gathering near al-Nouri Mosque in Old Mosul, killing 14 IS militants and destroying a VBIED and a weapons cache. (Source: CTS officer)

At around 3:00 p.m., airstrikes targeted and destroyed an IS VBIED as it approached federal police positions in Old Mosul. (Source: 5th Division officer)

Iraq Oil Report staff reporting on Mosul are anonymous for their security.