They were convicted of having joined IS -- which has declared a "caliphate" in parts of Iraq and Syria under its control -- and of plotting to attack members of Egypt's police force and military.
In Egypt, death sentences are forwarded to the country's grand mufti, the official interpreter of Islamic law, who then issues a non-binding opinion.
The sentences issued will either be confirmed or commuted on September 12 by the court in the northern province of Sharkia, a court official said.
In a separate trial, two cousins were sentenced to three years in prison in the same province for using Facebook to promote the ideology of IS, the official added.
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In Egypt, death sentences are forwarded to the country's grand mufti, the official interpreter of Islamic law, who then issues a non-binding opinion.
The sentences issued will either be confirmed or commuted on September 12 by the court in the northern province of Sharkia, a court official said.
In a separate trial, two cousins were sentenced to three years in prison in the same province for using Facebook to promote the ideology of IS, the official added.
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