Liberal party leader Jan Björklund.

The Liberal Party proposed widening Sweden's child marriage ban to include young migrants who have married overseas before coming to Sweden, party leader Jan Björklund told Swedish Radio.

In July 2014, Sweden strengthened its laws against forced marriage and child marriage. The country does not recognize marriages if one of the parties is under 15 years old. However, Swedish law assumes all foreign marriages should be recognized if they are legal according to the laws of the country where the marriage took place.

"There are many young girls who have come to Sweden, they are still children,...