Rurik Jutting hooked up with mother-of-two Sumarti Ningsih - and his other alleged victim Jesse Lorena - on several occasions after picking them up from clubs, a source told MailOnline.In a separate development, a fellow sex worker claimed Jutting had been spotted 'strangling' Miss Lorena during a row outside a nightclub hours before she was killed.A friend also made wild claims that the Cambridge graduate would hold drug-fuelled sex parties lasting two or three days at his flat after 'picking up ten or eleven' girls at time.The friend told MailOnline: 'He would pay each girl around HK$11,000 (£900) for the whole night, so in total it would cost him about HK$121,000 (£10,000) per party.'There's a pool at the roof of J Residence and the building has a sauna, steam bath and a function room where he would bring some girls sometimes, but not for parties.'  As the 29-year-old Merrill Lynch trader appeared in a Hong Kong court charged with two murders, police were widening their inquiries to the Philippines where Jutting was seen visiting the ‘sex capital’ city of Angeles.Detectives are investigating whether there are other victims after hundreds of macabre pictures were allegedly found on Jutting’s smartphone in a folder named ‘Yan corpse photos’. An acquaintance today told MailOnline that Miss Ningsih told a friend days before she was killed that she was 'going to meet a man who booked me for HK$12,000 (£960).'  The source, known as AJ, said Jutting often argued with and slapped the girls, who were friends, when meeting up for sex and reneged on promises to pay them despite boating about his wealth.'He claimed he is rich, but he's a mean guy,' said AJ. 'They asked for money up front first, but he didn't give, saying: "Don't worry, I give you later". But he never did.'He doesn't want to pay even after sex, even taxi money.' Meanwhile, a Filipina prostitute called Lynn told MailOnline that one of her friends saw Jutting grasping Jesse Lorena New Makati club on the night she was killed. (dailymail.co.uk)Bakudaily.Az