BATON ROUGE, La. -- The man accused of murdering a pregnant school administrator has bonded out of jail, according to our partners at WBRZ,

Robert Marks posted a $500,000 bond and was released from prison Friday evening.

Marks is accused of murdering 40-year-old Lyntell Washington. Her badly decomposed body was found near Grosse Tete back in June.

Marks plead not guilty on Tuesday to charges of first degree murder and first degree feticide.

39-year-old Marks was the assistant principal at Brookstown Middle School, the same school where Washington worked as a teacher.

Investigators said Marks and Washington were having an affair and Washington was 7 months pregnant with Marks' child at the time of the murder. Marks was married to another woman at the time.

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