TWO teenage girls were arrested and threatened with drug charges in a bid to force a confession from their boyfriends, a court heard yesterday. The girls, aged 15 and 17, were held in custody overnight and had drug charges hanging over their heads for two months, before the Attorney-General ruled the case against them should not proceed, the High Court heard. Robert Forrest, defending the 17-year-old's boyfriend, Ting Chi-ho, claimed police had deliberately used the girls to get a confession out of his client and to stop him complaining about his treatment. Ting, 21, a lorry driver, pleaded not guilty to trafficking in two quantities of heroin weighing a total of almost 70 grams. His co-defendant, Ko Wing-shing, 21, admitted both charges and will be dealt with later. The allegation about the arrest of the girls was denied by Detective Senior Inspector Wong Wing-wah, who was questioned about the matter when he gave evidence for the prosecution. Mr Forrest said: 'I suggest that you knew very well you had no evidence against these two young girls, but they were arrested in order that they could be used as a lever to persuade this man to confess to being involved with these drugs'. He claimed the two girls had been kept 'on ice' instead of having the charges against them dropped. Inspector Wong, of the Special Duties Squad, Shamshuipo, said the reason it took two months for the allegations against the girls to be withdrawn was that no action could be taken until a government chemist had submitted an analysis of the drugs which were seized. Prosecutor William Lam asked the inspector if he would have allowed a junior officer who conducted an interview with the defendant to use the arrest of the girls as a lever. Inspector Wong replied: 'Absolutely not'. Mr Lam said Ko was arrested in possession of heroin in Shamshuipo in the early hours of March 3. Police took keys from him and used them to gain access to a nearby flat. There they saw the two girls sitting on a bed. Ting was at a table and placing white powder on to a set of scales, it was alleged. The trial, before Mr Justice Michael Wong, continues.