Melissa Lucio was convicted and sentenced to death in 2008 for the murder of her 2-year-old daughter, Mariah Alvarez.

Credit: Courtesy Photo / Melissa Lucio's legal team The Texas Court of Criminal Appeals on Thursday rejected a lower court's finding that death row inmate Melissa Lucio is innocent of the 2008 death of her 2-year-old daughter.

Lucio has spent 18 years on death row after being convicted of killing her daughter, Mariah Alvarez.