(CBS/AP) NEW BRUNSWICK, N.J. - Prosecutors are likely to rest their case Thursday in the trial of Dharun Ravi. He is the man accused of using a webcam to spy on his roommate Tyler Clementi's intimate encounter with another man.
Ravi, now 20, is charged with 15 criminal counts, including invasion of privacy, bias intimidation and several crimes related to trying to cover up his actions.
The 18-year-old violinist Clementi, committed suicide on Sept. 22, 2010 - just days after the alleged spying and one day after what prosecutors say was an attempt to spy on him again.
Although Ravi is not charged with Clementi's death, in many ways the suicide lies at the heart of the case.
The prosecution has called about 20 witnesses so far in nine full days of testimony.
On Wednesday, they put on the witness stand a detective who interviewed Ravi on Sept. 23, 2010 - after Clementi was believed dead but before Ravi was charged.
Jurors saw the nearly hour-long video of the interrogation.
The investigator, Michael Daniewicz, repeatedly accused Ravi of lying about details. And Ravi, for his part, agreed that he had violated his roommate's privacy by going to a friend's room and using her computer to view images from his own webcam, which he had set up to accept web chat requests automatically. He said he did not see anything graphic and turned the stream off as soon as he realized what was going on.
He said he sent a Twitter post about what he saw, later, "daring" people to video chat with him two days later during the hours when Clementi had requested the room again, but claimed he was joking.
"I said that sarcastically, first of all," he said, continuing that he did not want people to watch the feed. Jurors had heard in earlier testimony, though, that Clementi visited Ravi's Twitter page 38 times in the two days before he killed himself and saved a screenshot of that tweet.
But Ravi said in the interview that he took steps to keep others from viewing the second dorm-room liaison. "And I turned off my computer," he said. "I put it to sleep."
"Regardless of what I said my computer wasn't accessible," he said.
Ravi said he wanted to protect his roommate. "I'm not trying to hero myself," he told the officer.
He was arrested days after the interview.