Jurors deciding the fate of mental patient who slashed a New York City psychotherapist to death with a meat cleaver say they remain deadlocked on their seventh day of deliberations.

Jurors sent a note to the judge on Thursday saying they were unable to reach a verdict in the murder trial of David Tarloff. But the judge told them to return on Friday for further deliberations.

Tarloff doesn't dispute that he killed Kathryn Faughey (FAW'-hee) in February 2008. But defense lawyers say Tarloff's schizophrenia made him so psychotic that he couldn't tell what he was doing was wrong.

Prosecutors say Tarloff carried out a deliberate plan and understood it was illegal.

Tarloff told authorities he set out to rob Faughey's officemate and encountered her instead.