Fugitive Adam Mayes thinks kidnapped girls are his daughters, relative says

(CBS/AP) GUNTOWN, Miss. - Adam Mayes, the Mississippi man on the run from a double-slaying thought he might be the father of the two girls he's now accused of kidnapping, his mother-in-law said.  Authorities say they think the missing girls, 12-year-old Alexandria Bain and 8-year-old Kyliyah Bain, are still with Mayes, nearly two weeks after he fled with them.

Pictures: Missing Tenn. mom and daughter found dead

In a Wednesday interview, Mayes' mother-in-law, Josie Tate, said he thought the missing sisters might actually have been his daughters and that it caused problems in his marriage to her daughter, Teresa Mayes, who's jailed in the case.

Authorities have put Adam Mayes on the FBI's Ten Most Wanted List and urged him to surrender. According to the Associated Press, authorities believe he may have changed his appearance.

The reward for information leading to Mayes' arrest is now at more than $100,000.