Video uploaded to YouTube on Tuesday appeared to offer glimpses of Iraq’s second-largest city, Mosul, in the hands of Islamist militants after the sudden retreat of Iraqi Army soldiers.

The most striking clip, recorded on a drive through the city by a blogger whose Google Plus page was previously devoted to chronicling mundane scenes of work and family life, shows the abandoned vehicles of government forces in flames on the streets and fighters from the Islamic State of Iraq and Syria, or ISIS, roaming the city in pickup trucks.