A $71,000 reward is being offered for information leading to the arrest of a man accused of killing a Tennessee mother and her teenage daughter before fleeing with the woman's two younger children.
Authorities say 35-year-old Adam Mayes abducted Jo Ann Bain and her three daughters on April 27.
According to officials, the investigation revealed Mayes killed Bain and her 14-year-old daughter Adrienne at their resident before he and his wife transported their bodies to Mississippi.
Both bodies were discovered in a shallow grave behind Mayes' mother's Mississippi home earlier this week.
The murders are said to be a direct part of kidnapping 12-year-old Alexandra and 8-year-old Kyliyah Bain.
On Tuesday, the Federal Bureau of Investigation said authorities were hopeful Alexandra and Kyliyah were still alive.
Authorities said Mayes and his 31-year-old wife Teresa each face two counts of first degree murder and two counts of especially aggravated kidnapping, while 65-year-old Mary Frances Mayes is charged with four counts of conspiracy to commit especially aggravated kidnapping.
Teresa Mayes remains in the Hardeman County Jail without bond, while her mother-in-law is being held on a $300,000 bond.
Adam Mayes was last seen in Guntown, Mississippi on May 1, 2012. Authorities said he is considered armed and dangerous.
Anyone with information regarding the whereabouts of Adam Mayes, Alexandria Bain and Kyliyah Bain is urged to call the TBI at 1-800-TBI-FIND.