The death of Karen Diamond, 82, has turned the attack in Boulder, Colo., on marchers for Israeli hostages into a possible death-penalty case.

An 82-year-old woman burned in an antisemitic firebombing in Boulder, Colo., earlier this month has died, authorities said Monday, prompting an upgrade in charges against the person suspected of carrying out the attack.

Mohamed Sabry Soliman, the 46-year-old Egyptian national who allegedly threw two Molotov cocktails at the crowd of people raising awareness for Israeli hostages being held in Gaza, now faces first-degree murder charges in state court. He also faces attempted murder charges and a number of hate crime charges in federal court. He remains in custody.