After submitting to a polygraph test and posting bond for a cocaine charge, a Richland man questioned in the drowning death of a woman in Lake Chotard was released Wednesday, Issaquena County Sheriff Richard Jones said today.

The results of the polygraph and the 50-year-old man’s identity have not been released. Jones said he was charged with cocaine possession based on materials found in his pickup. His bond was $5,000.

The body of Colleen Parkman, 52, also of Richland, was found floating face-down in the lake around 1:20 a.m. Sunday. She had been with a group of friends, including the man questioned, at the resort area and tavern earlier Saturday and was last seen around midnight, the sheriff said.

Autopsy results showed that Parkman drowned, but Jones said investigators have reason to suspect foul play and are still awaiting additional toxicology and other physical tests that will help them determine the cause of death.

The man had been held for questioning since Sunday. Jones said it was not believed that Parkman and the man were romantically involved.

The sheriff said investigators with the Mississippi Bureau of Investigation wrapped up the polygraph test Wednesday night. By state law, an individual can be held for up to 72 hours, but must be released if charges are not filed.

Polygraph tests results are not admissible in courts in Mississippi.

Lake Chotard, about 20 miles north of Vicksburg, off Mississippi 465, is a popular destination for fishing and weekend getaways with nearby cabins, condominiums, a general store and tavern.

Jerry Johnson, owner of Chotard Landing Resort, said he did not know Parkman and the man and they had never stayed in his properties before last weekend. He did not see them in the tavern but believed the party had been there for only a few minutes, Johnson said.

A spokesman with the MBI did not return a call this morning.

Parkman was originally from Postville, Iowa, where a memorial service is being planned for a later date.