Norway’s conservative prime minister, Erna Solberg, has proposed tightening the country’s abortion laws, in a political gambit that goes against Europe’s liberal trend.

Her idea is to amend paragraph 2c in Norway’s Abortion Act – also known as the Downs Paragraph, by reference to Downs Syndrome, a genetic disorder.

The paragraph allows abortion even after 12 weeks if the child was to be “seriously ill”.

It also allows the abortion of a healthy twin if its sibling was to be ill.

Developments in medical technology were leading to a “sorting” of human beings, Solberg said in a recent blog post.

“Many in our party do not feel comfortable about Norway, as one of the few countries in northern Europe, allowing the abortion of a healthy twin,” she said.

The move to tighten abortion laws in Norway, one of Europe’s most liberal societies, goes against a wider trend in the region.