What to know about Texas death row inmate Melissa Lucio's case

Melissa Lucio was found guilty of capital murder in the death of her two year old daughter in 2007. She has been in death row for the past 15 years.

A woman facing execution in Texas for killing her daughter is seeking clemency, claiming she was coerced into confessing to the crime.

Paramedics were called to Melissa Lucio's home in Harlingen, Texas, on Feb. 17, 2007, after her 2-year-old daughter Mariah Alvarez was found unresponsive and not breathing. Lucio told police Mariah fell asleep and did not wake up.

Lucio said that Mariah had fallen down a steep staircase during the family's move to a new apartment two days prior, but did not appear seriously injured, according to court records. Unable to be resuscitated, her daughter was later pronounced dead at the hospital.

Hours after Mariah's death, Lucio was interrogated by police for over five hours, according to her lawyers. She was especially vulnerable, her lawyers say, as she was grieving for her daughter, pregnant with twins at the time, and a victim of abuse and trauma throughout her life.