As the intense manhunt for Adam Mayes in connection with the Bain family disappearance and murders, Mayes' wife and mother have both been arraigned in a Hardeman County, Tenn., courtroom.

Mary Frances Mayes, 65, the mother of Adam Mayes, is charged with four counts of conspiracy to attempt especially aggravated kidnapping.  Teresa Ann Mayes, 30, the wife of Adam Mayes, is charged with four counts of especially aggravated kidnapping.

Bond was set at $500,000 for Teresa Ann Mayes and $300,000 for Mary Frances Mayes.

After finding the bodies of a missing Tennessee mother and her 14-year-old daughter in Mississippi, authorities expressed hope Tuesday that her two younger daughters may still be alive and with the alleged abductor. Neighbors were planning a candlelight vigil for the girls Tuesday evening.

The FBI said in a news release late Monday that the bodies of Jo Ann Bain and her 14-year-old daughter Adrienne Bain have been positively identified.

The FBI said it believed Bain's two other daughters -- 12-year-old Alexandria and 8-year-old Kyliyah -- were still with alleged kidnapper Adam Mayes. The affidavit filed in court said that some items belonging to the two younger girls had been found at a trailer rented by Adam Mayes in another part of Union County.

The agency also said Tuesday that there is evidence to suggest that the girls and their alleged kidnapper may have a different hair style and color. 

The search for the girls has become a multi-state hunt, because authorities say Mayes has ties to Texas, North Carolina and South Carolina. The FBI said the bodies were found behind Mayes' residence near Guntown, Miss.

Mayes was last seen a week ago in Guntown, about 80 miles south of the Bain family's home in Whitesville, Tenn.

Kidnapping warrants have been issued for Mayes. The Mississippi Department of Public Safety said Saturday it believed "the children may be in extreme danger."

Jo Ann Bain and her daughters were last seen at their home outside Whiteville. Before they disappeared, the Bains had been preparing to move to Arizona.

The mother's Facebook page shows that in the days before the four disappeared she was packing and working on homework. Her last post, dated April 26, said "a good venting always makes you feel better." It didn't say why she was venting.

A web of ties connects Mayes to the missing woman and her family. They were all known around Whiteville, a town of about 4,500 people 60 miles east of Memphis. Mayes was a longtime friend of Bain's husband and had been at their home the evening before they disappeared, police said.

Mayes had stayed over at the Bains' house to help the family pack and load up a U-Haul to drive across the country to Arizona, Helm said. Gary Bain, who was at the house that night, awoke to find his wife, daughters and Mayes gone.

He couldn't reach his wife on her cell phone that day, and reported them missing when the girls didn't get off the school bus.

While authorities say Mayes is likely to be armed and extremely dangerous, acquaintances describe him as friendly, helpful and like an uncle to the girls.

Gerald Long, 60, of Jackson, Tenn., said he last saw Mayes about two years ago. He said Mayes lived across the street from him for about a year with his wife, Teresa. He described Mayes as a "sociable person."

He was helpful, Long said. "He didn't seem violent or anything."

As for his relationship with his wife, Long said "they were always up and down about things." Long would not elaborate.

FBI spokesman Joel Siskovic said authorities talked to Mayes early on in the investigation, but he fled when they tried to contact him again.

The Associated Press contributed to this report.