The killings follow large protests by the community last month against the passage of the provincial elections law. An article that would give representation to Christians and other minorities was removed from the law before its passage.

Now the last safe haven for Christians is gone, said Canon Andrew White the vicar of St. George's church in Baghdad.

After a spree of killings and forced evictions of Iraqi Christians in Baghdad last year, many fled to Mosul. But even there they could not escape the danger. In February of this year the Archbishop Paulos Faraj Raho of Mosul was kidnapped and killed.

"Christians are being killed in the only place they felt safe, in Ninevah," White said, referring to the province of which Mosul is the capital. "This is where they fled to and now there's no safe place for them."

Over a thousand Christian families have fled Mosul for outlying villages and villages in the Kurdistan region in search of safety, a spokesman for the Ministry of Endowment and Religious Affairs said. Posters are being put up with guidelines on how to leave.

"The Christian families left in Mosul are very few indeed," said Mariwan Nakshabandee, spokesman for the Ministry of Endowment and Religious Affairs, which oversees Christian communities in Mosul.

Iraqi Assyrian and Chaldean Catholics trace their roots to ancient Mesopotamia and Christian communities were prominent in many major Iraqi cities, including Mosul in the north and Basra in the south and Baghdad. The capital had enclaves in the central neighborhood of Karada, the eastern neighborhood of New Baghdad and nearby al-Ghadir as well as Dora in the capital's south.

Christians once were estimated to be about 3 percent of the Iraqi population, or about 800,000 people.

But as Iraq grew bloody and violent the Christian community dwindled. Now some estimate that more than half of Iraq's Christians have fled. White believes that the Christian community is about a quarter of the estimated 800,000.

"It isn't easy for these people to leave," he said. "They have no representation.... We need the Christian world to do something about it."

On Saturday, three more Christian men were found dead in Mosul. Among the 12 killed just this week were doctors, engineers, pharmacists and at least one disabled man. Three empty homes of Christian families in eastern Mosul who had fled were reduced to rubble as a warning, police in Mosul said.