Watch: How the Boulder attack unfolded using Molotov cocktails

A man in Boulder, Colorado, was arrested for a suspected act of terrorism and charged with a federal hate crime and 16 counts of attempted murder after allegedly setting people on fire at an event supporting Israeli hostages in Gaza. The suspect, identified as Mohamed Sabry Soliman, 45, an Egyptian national, reportedly shouted "free Palestine" during the attack. Authorities are investigating the incident, which occurred during the Run for their Lives event in Boulder.