It added that unspecified penalties were imposed on the violators. Another 88 people were arrested in various harassment cases, police have added in separate statements, after several women complained on social media that they were harassed at the MDL Beast music festival in Riyadh earlier this month.
The electronic music festival, which drew tens of thousands of fans, was billed by organisers as the biggest ever to be hosted in the kingdom. Police did not offer any further details, including the duration of the detentions.
This marked the first such mass crackdown since de facto ruler Crown Prince Mohammed bin Salman began easing social restrictions in the ultra-conservative kingdom, lifting decades-long bans on cinemas and women drivers while allowing gender-mixed concerts and sporting extravaganzas. The relaxed social norms have been welcomed by many Saudis, two-thirds of whom are under 30.
But in September, Saudi Arabia said it would penalise violations of "public decency", including wearing immodest clothing and public displays of affection, after the austere kingdom began issuing tourist visas for the first time.