Weisheit’s attorney, Joseph Perkovich, says severe mental illness and brain damage should be considered in deciding whether to commute the death sentence. The public hearing, at the Indiana Government Center in Indianapolis, will include speakers both for and against clemency.

The board will make a recommendation to Gov. Mike Braun, who will make the final decision. Perkovich has asked the Indiana Supreme Court to delay the execution so brain scans can be conducted to help assess Weisheit’s mental condition. That request was still pending as of Sunday. Braun has said he would consider the scans if they are completed.

Weisheit was sentenced to death for the killings of Alyssa Lynch, 8, and Caleb Lynch, 5, his then-fiancée’s children. The children died in an arson in 2010. At an earlier clemency hearing, Weisheit expressed regret but struggled to explain what led to the killings and did not offer a reason the board should recommend stopping his execution.

Perkovich said Weisheit’s performance at that hearing reflected his mental condition. He has argued that legal barriers kept evidence about Weisheit’s condition from receiving full consideration in court, and that evidence of substantial brain damage should weigh against execution.

The children’s father, Steven Lynch, has signed an affidavit asking Braun to grant clemency. Their mother, Lisa Lynch, has not submitted a similar letter. Perkovich said he would not presume to tell her what position to take, while describing the father’s request for mercy as significant.

The clemency request comes as Indiana’s execution practices are also under scrutiny. Perkovich has separately asked Braun to pause lethal injections until the Department of Correction reviews its execution procedures, citing concerns about a botched execution in Tennessee. In June, Indiana Attorney General Todd Rokita requested Weisheit’s execution date, saying it was time to carry out the sentence.