Residents of Mosul say the Islamic State are using civilians as human shields as Iraqi and Kurdish forces captured outlying villages.

Iraqi and Kurdish commanders said Tuesday they have paused their advance on Mosul a day after the start of a massive operation to retake the Islamic State-held city, which is expected to take weeks, if not months.

Some Iraqi officials worry that the Mosul fight has been rushed and if the city is retaken without a plan to broker a peace, it could lead to more violence.