A human-rights group and the family of a mentally-ill man on death row in Pakistan have pleaded with the government to halt his execution.
Imdad Ali was convicted in a 2001 murder case and has exhausted all appeals.
A clemency request to Pakistan's president was rejected, and he is due to be executed on Tuesday.
Justice Project Pakistan said on Sunday that state-appointed doctors diagnosed Ali with schizophrenia and declared him unfit to be hanged.
His wife, Safia Bano, has called on the government to intervene.
The Justice Project says Pakistan has executed 419 people since it lifted a ban on capital punishment in December 2014.