Malaysian police have detained more than 70 male sex workers and their customers when they raided four parties in progress Saturday evening, a news report said Sunday. Police teams from the northern Penang state launched raids on four separate locations including a massage parlour and a fitness centre, resulting in the detention of the 28 local men including a Chinese national, aged between 20 and 40, and their customers, state police chief Gan Kong Meng said. 'The case had been classified as an act of gross indecency under Section 377D of the Penal Code' said Gan, adding that some of the customers were from Europe and the United States. It was believed that some of the men were still undressed during the surprise raids with several used condoms found strewn all over the floor of the premises, the Star daily reported. Police have also seized some pornographic materials, lubricating jelly and boxes of condoms at the scene Police have also confirmed that the owners of the premises will be charged for being involved in vice.