Ms Cecilia Sue gives a graphic account of her side of the story in Ng Boon Gay trial

The woman at the centre of the sex-for-contracts case of former Central Narcotics Bureau chief Ng Boon Gay took to the stand today. 

36 year old Ms Cecilia Sue Siew Nang testified as key prosecution witness on Day Two of the trial. 

She told the court how Ng had forced her head down on four occasions in 2011 when they met to chat. 

Ms Sue said she would struggle to move away from Ng and would tell him off. 

Ng would then promise not to repeat his actions. 

This prompted prosecution to ask why she continued to meet Ng. 

To this, Ms Sue said she's only a normal sales representative and that she didn't want to offend Ng and sour relations with CNB. 

During the two-hour on the stand, Ms Sue described more than three times that Ng was well-connected. 

Ng is accused of obtaining oral sex with Ms Sue on four occasions and in return, he is accused of favouring the two firms she had worked for - Hitachi Data Systems and Oracle Singapore Corporation. 

Ms Sue will take the stand again tomorrow.