JACKSONVILLE, Fla. -

Two more people have been charged in the killing of an 83-year-old Gainesville man who went missing last week, Jacksonville police announced Wednesday.

Shanda Merritt, 34, who was arrested on unrelated charges of driving his stolen rented Jeep, and 17-year-old Raymond Austin are charged with murder in the death of Charles Soukup.

Earlier this week, police said 17-year-old Corey Harrington was charged in Soukup's death after they said he admitted to killing the 83-year-old.

Merritt is the Harrington's mother.

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Soukup's body was found Friday near Jacksonville International Airport.

Police said Harrington led investigators to the remains in a wooded area.

Kandra Harrington, 18, and Rose Daniels, 51, were also arrested and charged with tampering with evidence in connection with the case. Police said they tried to get others to lie about what happened.

Police said Merritt was arrested the night Soukup was killed. Investigators said she was driving the Jeep that Soukup had rented at the airport and had just shot her ex-boyfriend. Merritt was charged with aggravated assault and cocaine possession in that case.

Soukup's son-in-law dropped him off at the airport Oct. 25 because he was going to visit his ailing twin brother in Ohio. When he couldn't get a seat on the flight, Soukup rented a vehicle to drive home to Gainesville.

Police said Corey Harrington, Shanda Merritt and Raymond Austin came into contact with Soukup sometime after that, took him to the nearby wooded area and killed him. Investigators did not go into detail on how the three suspects met Soukup.

According to sources, Merritt approached Soukup at the car rental counter at JIA asking for a ride, which was the first step in the carjacking and killing. Merritt is also charged with carjacking and kidnapping.

Police said it wasn't until the next morning when Soukup's family realized he was missing and contacted airport police.