ATLANTA — The top court in the U.S. state of Georgia on Monday upheld the conviction and life sentence against a vegan couple over the death of their malnourished 6-week-old boy, who was fed a diet largely consisting of soy milk and apple juice.

The Georgia Supreme Court’s unanimous ruling rejected appeals by Jade Sanders and Lamont Thomas, who were convicted and sentenced after a jury found them guilty of malice murder, felony murder, involuntary manslaughter and cruelty to children for the April 2004 death of Crown Shakur.

The two first-time parents rushed the infant to the hospital after he began to have trouble breathing and doctors declared him dead on arrival after failing to resuscitate him.

They found his death was due to extreme malnourishment or starvation, and police then searched the couple’s apartment.