CAIRO—A Libyan court Monday sentenced 23 suspected ISIS terrorist group extremists to death for launching deadly attacks that killed dozens of people, including Egyptian Coptic Christians.

The appeals court in the western city of Misrata also sentenced 14 other terrorists to life in prison who were convicted on the same charges, which include destruction of police facilities and public property.

The court sentenced nine defendants to between three and 12 years in prison. It acquitted five suspects.

The court did not elaborate further details.

The ISIS and other extremist groups exploited the chaos that engulfed Libya after the 2011 uprising. They seized the coastal city of Sirte and other cities including Derna in eastern Libya.

The ISIS terrorists were eventually expelled from Sirte in December 2016 by forces fighting for the former U.N.-backed Government of National Accord. Forces of east-based commander Khalifa Hifter reclaimed Derna two years later.

Hundreds of alleged former ISIS terrorists remain incarcerated in Libyan prisons, many of whom are awaiting trial.