Officers raided budget hotels in the central state of Selangor and capital, Kuala Lumpur, detaining unmarried Muslim couples who were sharing rooms.

The religious authorities in Malaysia say Valentine's Day is synonymous with immoral activities.

Those arrested could be jailed for up to two years if convicted.

The anti-Valentine's Day campaign by the country's Islamic authorities goes back to a fatwa issued in 2005.

On Monday evening, religious enforcement officers launched co-ordinated raids, targeting budget hotels and public parks in Selangor and Kuala Lumpur.

In Selangor alone, officials said 80 people were detained for khalwat or close proximity - an Islamic law that prevents unmarried Muslims from being alone with someone of the opposite sex.