Maninder Pal Singh Kohli had "very good reason to murder" Hannah Foster, a court heard this morning.
He was accused of dodging the question when asked why he thought his abductors forced him to have sex with Hannah Foster.
Prosecutor Nicholas Haggan QC suggested that Kohli had had five and a half years to think of an explanation, adding that he must have given it a lot of thought.
Telling the court that there would be no evidence of sexual intercourse after a few days he told Kohli: "You're not stupid.
"You know very well that if you admit to the jury that after a few days there would be no evidence of you having sex with her, then there would be no point in the men having made you have sex with her in the first place."
Mr Haggan continued: "Why would they want to kill Hannah?"
Kohli replied: "You would have to ask them."
Mr Haggan continued: "You are telling the jury that when you were sat in your prison cell in India you didn't ask yourself why did these men force me to have sex with Hannah."
Kohli replied: "No-one gave me chance. I was in highest security prison there."
Mr Haggan asked: "Why on earth would the men murder her?"Kohli replied: "Ask them. I don't know."
Mr Haggan told the court how Hannah's death certainly wasn't an accident, adding that Kohli had seen the pictures of the injuries to her neck.
He said to Kohli: "It takes a lot of effort to strangle someone by hand. Somebody murdered her. Why would these men murder Hannah?"
He continued: "You would have a very good reason to murder her wouldn't you? You didn't want her to tell the police that you had abducted and raped her."
Kohli denies the abduction, false imprisonment, rape and murder of 17-year-old Hannah.
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