From the UK Catholic Herald:

Around 4,000 Christians have escaped Mosul in northern Iraq to neighbouring villages, creating a potential humanitarian nightmare as winter approaches. Many left without any possessions after receiving written threats, and militants blew up at least three Christian homes after chasing out the owners. The Iraqi government has sent 2,500 additional police to the city to protect churches.
The refugees now face a bleak winter without any food or shelter in what aid workers are calling a “desperate” situation.
Some 25 families fled in one day last week followed by another 50 the next day. It turned into an exodus after 13 Christians were murdered, including a father and son and a disabled man in his twenties. Most victims owned or worked in shops, suggesting a campaign to break the economic strength of the Assyrian Christian community.
The exiles have moved north and east to the villages of the Nineveh Plains, the last stronghold of Iraq’s Christian minority. In one Christian village, Qaraqosh, more than 1,000 refugees are now staying in schools and churches.
However, Qaraqosh and the others villages in the area are already overwhelmed with Christian refugees from the fighting elsewhere in the country, and Christian charities are preparing emergency food, medicine and shelter.