More than 400,000 people have been displaced in north-western Syria over the past three months, the UN said Friday (July 26th), as the Syrian regime and its allies continue to bombard the region, AFP reported.

"More than 400,000 people have been displaced since the end of April," said David Swanson of the UN Office for he Co-ordination of Humanitarian Affairs (OCHA).

The region under attack is home to some three million people, nearly half of them already displaced from other parts of the country.

It covers nearly all of Idlib and parts of neighbouring Aleppo, Hama, and Latakia provinces.

Most of the displacement is from southern Idlib and northern Hama, the two areas that have been hit hardest by the flare-up, OCHA said.

"The majority of those fleeing have displaced within Idlib governorate while a smaller number have moved into northern Aleppo governorate," it said. "Roughly two-thirds of people displaced are staying outside camps."

The region is controlled by the extremist alliance Tahrir al-Sham.

Since late April, more than 740 civilians have been killed in aerial bombardment and shelling of the region by the Syrian regime and its allies, according to the Syrian Observatory for Human Rights.

OCHA said that since the end of April it had documented 39 attacks against health facilities or medical workers in the region.

At least 50 schools have been damaged by the airstrikes and shelling, it added.

Regime air raids pummelled a market in the Idlib town of Saraqib, the second attack on the same market this week, killing one civilian and wounding several others, according to the Observatory.

It said two other civilians were killed and 20 others were wounded in regime attacks elsewhere in the region.