The ruling comes one month after Morsi received a separate 20-year sentence for inciting violence against protesters while in office. Egyptian authorities have detained Morsi since his overthrow in July 2013.
The sentencing triggered international outrage. Amnesty International called the verdict a “charade based on null and void procedures” and demanded Morsi’s release or retrial. Recep Tayyip Erdogan, Turkey’s president and an erstwhile supporter of Morsi, also condemned the decision.
“The popularly elected president of Egypt, chosen with 52 percent of the vote, has unfortunately been sentenced to death," he said at a rally in Istanbul.
“Egypt is turning back into ancient Egypt,” he added.
Read more: Egypt's Democratically Elected President Mohammed Morsi Sentenced to Death - The Atlantic