A man accused of killing one person and injuring a dozen more in a firebomb attack on Colorado demonstrators showing support for Israeli hostages in Gaza plans to plead guilty this week to murder and other charges, according to court documents. Mohamed Sabry Soliman faces a sentence of life in prison without the possibility of parole in the June 1 attack in downtown Boulder, according to the documents filed by his attorneys on Sunday in a related federal case. Soliman had previously pleaded not guilty after he was accused of throwing two Molotov cocktails during the demonstration at a pedestrian mall. An 82-year-old woman who was injured in the attack later died. A dozen others were also injured. Egyptian national Mohamed Sabry Soliman is seen in a mugshot released by the Boulder Police Department. Boulder Police Department Soliman is an Egyptian national who federal authorities say was living in the U.S. illegally.…