Robert Moreno Ramos, 64, is scheduled to be executed on November 14, 2018.
Ramos was convicted in the February 1992 slaying of his wife and two children inside the family’s home in Progresso.
His wife Leticia Ramos, 42, daughter Abigail Ramos, 7 and Jonathan Ramos, 3 were all beaten with a blunt object and died of skull fractures.
Their bodies were found more than a month later buried beneath the bathroom floor of their home after Mrs. Ramos’ sister reported them missing.
Abigail’s hands had been bound by tape and her mouth gagged prior to her death.
Robert Ramos first told relatives that his family had died in an automobile accident, but couldn’t say where.
He then claimed to have found his family dead after returning to the home from a day of job seeking.
He later confessed, saying he fled to Arkansas after the murders and discarded the murder weapon, which was never found.
Ramos married another woman three days after killing his family and moved her into the home where they were buried.
According the Houston Chronicle, he wasn’t notified of his right to inform the Mexican Consulate about his arrest and legal assistance from his country.
His lawyers also argue that the jury never learned about his abusive childhood, brain dysfunction, bipolar disorder and low IQ.
Local 23 News reached out to the Mexican Consulate for comment, but they are unable to comment about specific cases.