ONEIDA COUNTY, N.Y. -- The suspect of a double homicide in Utica has been charged.

29-year-old Naythen Aubain was arraigned Tuesday night and charged with two counts of first-degree murder according to Oneida County District Attorney Scott McNamara. He is accused of killing his landlord, 87-year-old Jane Wentka, and his 90-year-old grandmother Katherine Aubain.

Aubain was scheduled to appear in court Wednesday morning, but it was postponed pending the results of a mental health exam.

On his way into the Oneida County Jail, Aubain said "I did it in the name of Jesus Christ."

According to court documents, Aubain admitted to investigators that he stabbed both victims in the neck. He also allegedly told police where to find their bodies.

Aubain's attorney requested a medical exam to determine if his client is capable of understanding the charges against him.

He is expected back in court Monday morning, but the district attorney's office says they can't move forward until a doctor finds him competent.