A Georgia father of five and director at a construction firm who went missing from a business trip to Baton Rouge, Louisiana, before he turned up dead in a vacant lot days later had several different kinds of drugs in his system at the time he died, according to the coroner.

Early on March 7, authorities found 42-year-old Nathan Millard dead, his body rolled up in a carpet, in a vacant lot near a closed funeral home off Scenic Highway in Baton Rouge — about a seven-minute drive from where he was last seen on Feb. 23 at Happy's Irish Pub downtown with a client.

Millard had fentanyl, cocaine and alcohol in his system at his time of death, East Baton Rouge Parish coroner Dr. William "Beau" Clark said in a press release.

Clark listed Millard's cause of death as fentanyl combined with cocaine and alcohol and marked his manner of death as accidental.

NATHAN MILLARD DEATH: SUSPECT ARRESTED, ACCUSED OF DUMPING MISSING EXEC'S BODY

Missing Nathan Millard

Nathan Millard went to an LSU basketball game followed by Happy's Irish Pub in downtown Baton Rouge, Louisiana, on Feb. 23, when he was last seen. (Baton Rouge Police Department)

Baton Rouge authorities have arrested Derrick Perkins, 45, "for his involvement in the improper disposing of Nathan Millard’s body," as well as obstruction of justice, simple criminal property damage and failure to seek assistance. 

Derrick Perkins mugshot

Baton Rouge authorities have arrested Derrick Perkins, 45, "for his involvement in the improper disposing of Nathan Millard’s body," as well as obstruction of justice, simple criminal property damage and failure to seek assistance.  (Baton Rouge PD)

Police also arrested Tiffany Ann Guidry for unlawful disposal of human remains, prostitution and failure to seek assistance. 

GEORGIA EXECUTIVE DISAPPEARS AFTER NIGHT AT LSU BASKETBALL GAME, BATON ROUGE BAR

Tabbetha Barney is wanted for unlawful disposal of a body, prostitution and failure to seek assistance.

Louisiana police investigation

Tiffany Ann Guidry, left, and Tabbetha Barner are being sought by the Baton Rouge Police Department in the death of Millard. (Baton Rouge PD)

Millard had been in Baton Rouge on Feb. 23 to meet with a client at an LSU game and then headed to Happy's afterward. Around 11:30 p.m., Millard left Happy's to return to his hotel room but never made it back.

He was found dead nearly two weeks later. Clark said Millard had "[n]o evidence of internal or external trauma" after his death.

Missing Nathan Millard and his daughter

Millard, a married father of five who works in construction, went to a bar called Happy's Irish Pub, about a two-minute walk from the Courtyard Marriott hotel where he was staying, after the LSU game. (FOX 5 Atlanta)

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The Baton Rouge Police Department has not released any further information relating to Millard's disappearance and death.

Authorities are asking anyone with information about the case to contact BRPD's Missing Persons Division at 225-389-3853 or Crime Stoppers at 225-344-7867.