SAN QUENTIN, Calif. -- Condemned killer Scott Peterson has been receiving as many as 25 pieces of mail a day since arriving on San Quentin's Death Row, many coming from females including at least three wedding proposals, according to a prison spokesman.

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Video On Demand: San Quentin Spokesman Vernell Crittendon Talks About Peterson's Prison Stay

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Video On Demand: Claudine Wong Reports On Peterson's Arrival At San Quentin

San Quentin spokesman Vernell Crittendon said Peterson's first month at the prison has been rather uneventful.

He currently is in the prison's adjustment center along with recent Bay Area additions brothers Justin and Glenn Helzer -- convicted of the slayings of five people -- and Stuart Alexander -- convicted of gunning down three meat inspectors.

"Scott has been adjusting to prison life on death row rather well," Crittendon said. "He's on with a number of death row inmates we are processing at this time. Justin and Glenn Helzer as well as Stuart Alexander, the Sausage King."

The prison spokesman said Peterson was approved last Friday to go out and begin exercising in a walk-alone caged area -- called dog cages by the inmates -- barely bigger than his cell.

When he is in his cell, Crittendon said Peterson has no access to personal property yet but does enjoy reading mail.

"He is doing a lot or reading, particularly mail," the prison spokesman said. "He is still receiving a large amount of mail, I didn't actually count them but I'd say he probably receives 25 piece of mail a day."

"Much of that mail is from people who do not know Scott Peterson personally and most of them are females…Three of them I recall were actually wedding proposals to him. There have also been a number of media requests for interviews."

Crittendon said Peterson could meet the women who are writing to him by simply sending them a visitor's questionnaire. Once the questionnaire is returned, prison officials review it and then would give the person a security clearance to come and visit Peterson.

Peterson is not the only member of San Quentin's death row to attract a female following. Convicted mass killer Richard Ramirez, the infamous Night Stalker, was married at the prison on October 3, 1996.

Crittendon said as for visitors, Peterson's family received their security clearance last Friday and could now come and visit him.

Peterson will remain in the adjustment center for another 4-6 weeks while prison officials observe how he interacts with fellow prisoners. He will then be moved to death row.

Peterson was sentenced to death in March for the murder of his wife, Laci, and the couple's unborn son. At his sentencing, Judge Alfred A. Delucchi accepted the jury's recommendation of death and called the killings "cruel, uncaring, heartless and callous."

An eight-months-pregnant Laci Peterson disappeared on Christmas Eve 2002. Prosecutors said Peterson killed her and then dumped her body in San Francisco Bay. The badly decomposed remains of Laci and her fetus washed ashore four months later.

Prosecutors said Peterson strangled his wife to escape marriage and impending fatherhood, longing to return to the bachelor life as he carried on an affair with massage therapist Amber Frey.

In a probation report sent to the court, Modesto Police Detective Craig Grogan called Peterson "a very dangerous man and without a conscience."