GENEVA (AP) – Swiss voters overwhelmingly approved a constitutional ban on minarets on Sunday, barring construction of the iconic mosque towers in a surprise vote that put Switzerland at the forefront of a European backlash against a growing Muslim population.

Muslim groups in Switzerland and abroad condemned the vote as biased and anti-Islamic. Business groups said the decision hurt Switzerland’s international standing and could damage relations with Muslim nations and wealthy investors who bank, travel and shop there. themselves.

The referendum by the nationalist Swiss People’s Party labeled minarets as symbols of rising Muslim political power that could one day transform Switzerland into an Islamic nation. The initiative was approved 57.5 to 42.5 percent by some 2.67 million voters. Only four of the 26 cantons or states opposed the initiative, granting the double approval that makes it part of the Swiss constitution.