David Port (Photo courtesy of TDCJ)

(HOUSTON) — One of Houston’s most infamous killers is set to be released from prison, 28 years into a 75-year sentence.

David Port killed 23-year-old mail carrier Debra Sue Schatz in the Memorial-area home he shared with his parents. He was convicted in 1985.

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Port was 17 at the time of the murder. Now 47, there are no strings attached when he walks out of prison a free man next Thursday thanks to a loophole in Texas law.

This loophole is opening the cell doors for hundreds of convicted killers and other violent criminals, setting dates for their early release.

All inmates convicted between 1977 and 1987 are being released from prison after the number of days they have spent in jail and the number of days they have spent in good conduct equals one-third of their initial sentence, according to the Texas parole guide.

“Under state law, he must be released June 5th,” Andy Kahan, victim advocate for the City of Houston, said.

Schatz was delivering mail to Port’s house the day she died, filling in for a co-worker who had called in sick.

Kahan believes Port first tried to rape her before shooting her. Now, he is trying to get Port classified as a sex offender.

“That’s the only way the community will know where he is residing,” Kahan said.

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Infamous Houston Murderer to be Released from Prison  was originally published on

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