IRVINE, Calif. -- The man who admitted to dumping to the body of San Diego State University student Donna Jou will walk free on Wednesday after serving just three years behind bars.

"Part of my heart is gone," said Donna's father Reza Jou, as he held a photo of his daughter in his hands. "Don't know [if] my child… is dead or alive."

It has been more than four years since his daughter Donna – a pre-med student at San Diego State – disappeared.

Prosecutors say John Steven Burgess – a three-time sex offender – lured Donna through a Craigslist ad looking for a math tutor in June 2007.

Burgess admitted to taking her to his Los Angeles home and confessed to injecting her with heroin and cocaine. He said he found her dead the next morning.

"We know that he lied," said Jou.

Burgess admitted to dumping Donna's body in the Pacific Ocean. For his admission, Burgess received a five-year sentence for involuntary manslaughter and concealing a death.

Yet, he is set to be released from jail on Wednesday.

Jou said he was notified through an email sent two weeks ago, which read, "John Burgess is scheduled to be released. December 7th, 2011."

On Wednesday morning, Jou will stand on the steps of the Los Angeles County District Attorney's office, fighting to keep his daughter's mysterious death top of mind.

"We are going to ask for justice for my innocent child," said Jou.

He told 10News if he could ask Burgess one question, it would be to know where his daughter's body is.

Jou, who is a scientist for NASA, said there is no physical proof of his daughter's death or that she was dumped into the ocean, as Burgess has admitted.

"I don't accept word of mouth," said Jou. "I have to see it in practice."

That is why he said he will never give up searching for his daughter.

Jou told 10News he would like new legislation passed to make sure people like Burgess get the stiffer sentences in plea deals.

He is calling on Assemblyman Nathan Fletcher to lead that charge, as he did with Chelsea's Law.