By Emily Le Coz

TUPELO, Mississippi (Reuters) - The wife of the man suspected of kidnapping a Tennessee mother and her three daughters has admitted she drove them to a house in Mississippi where the dead bodies of the mother and oldest daughter were later found, according to records released Tuesday.

Teresa Mayes, wife of Adam Mayes, was arrested Sunday along with his mother, Mary Mayes, officials said Tuesday. Both remain jailed at Hardeman County Jail in Tennessee.

Police in two states and the Federal Bureau of Investigation are hunting for Adam Mayes. Authorities believe he still holds the two youngest daughters of Jo Ann Bain, whose body was discovered along with that of her 14-year-old daughter Adrienne, behind a barn on Mayes' property.

Teresa Mayes, 31, has been charged with four counts of especially aggravated kidnapping and held on a $500,000 bond, Hardeman County Circuit Court Clerk Linda Fulghum said. Mary Mayes, 65, has been charged with four counts of conspiracy to commit especially aggravated kidnapping and held on $300,000 bond, the clerk said.

The two Mayes women were arrested without incident late Sunday in Union County, Mississippi, and transported across the state line to Hardeman County, where they were booked early Monday, Union County Sheriff Jimmy Edwards said.

"We developed information that led us to believe that they were a part of it," Edwards said.

An affidavit filed with the Hardeman County Court said that Teresa Mayes told Tennessee Bureau of Investigation agents that she drove the victims from Hardeman County, Tennessee, to Union County, Mississippi.

Both Teresa and Mary Mayes told investigators they saw Adam Mayes digging in the backyard in Mississippi on April 27, the day of the disappearance.

Edwards said it doesn't appear either woman knows the whereabouts Adam Mayes or the two missing Bain children.

On Monday, the medical examiner in Memphis confirmed two bodies found last weekend behind Mayes' barn in Guntown, Mississippi, were those of Jo Ann Bain, 31, and her oldest daughter, Adrienne Bain, 14, the FBI said.

Authorities also believe at least one of the two Mayes women knew about the bodies, Edwards said. He didn't say which one.

Bain's other two daughters, Alexandria, 12, and Kyliyah, 8 - taken along with their mother and older sister from their home - were believed to still be with Mayes, the FBI said on Monday night.

The Tennessee Bureau of Investigation said it is believed Mayes has changed his appearance and that he may have altered the appearances of his victims, perhaps by cutting and dying their hair.

Bain's husband reported the four missing from their rural western Tennessee home April 27. Mayes, described as a friend of the family who was at their home to help them move to Arizona, was quickly identified as a suspect.

Mayes was last seen in Guntown, north of Tupelo, last Tuesday, according to the FBI.

(Editing by Daniel Trotta and Cynthia Osterman)