BATON ROUGE- The man accused of murdering a pregnant school administrator has bonded out of jail.

Robert 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.

Sources have confirmed that Marks posted a $500,000 bond and was released late Friday evening. 

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

An investigation into Washington's disappearance began in June when police found her 3-year-old child wandering alone in a parking lot, close to where Washington's abandoned vehicle was found with blood inside.

Search parties were dispatched to track down Washington, who remained missing through the weekend. Her body was found in a sugar cane field by workers.

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.

More information on Washington's death can be found here. Check back for updates.