Across the country, the New York Police Department said it has upped its presence at religious sites throughout the city for Shavuot.
Sadly, attacks like this are becoming too common across the country, said Mark Michalek, the special agent in charge of the FBI's Denver field office, which encompasses Boulder. This is an example of how perpetrators of violence continue to threaten communities across the nation.
The eight victims who were wounded range in age from 52 to 88 and the injuries spanned from serious to minor, officials said.
The attack occurred as people with a volunteer group called Run For Their Lives was concluding their weekly demonstration to raise visibility for the hostages who remain in Gaza. Video from the scene shows a witness shouting, He's right there. He's throwing Molotov cocktails, as a police officer with his gun drawn advances on a bare-chested suspect who is holding containers in each hand.
Alex Osante of San Diego said he was having lunch on a restaurant patio across the pedestrian mall when he heard the crash of a bottle breaking on the ground, a boom sound followed by people yelling and screaming.
In video of the scene captured by Osante, people could be seen pouring water on a woman lying on the ground who Osante said had caught on fire during the attack. A man, who later identified himself as an Israeli visiting Boulder who decided to join the group that day, ran up to Osante on the video asking for some water to help.
After the initial attack, Osante said the suspect went behind some bushes and then re-emerged and threw a Molotov cocktail but apparently accidentally caught himself on fire as he threw it. The man then took off his shirt and what appeared to be a bulletproof vest before the police arrived. The man dropped to the ground and was arrested without any apparent resistance in the video that Osante filmed.
As people tried to help the woman on the ground, another woman who appeared to be a participant in the event yelled to others out of the camera's view, defending their cause, saying they don't talk about the government but just talk about the hostages.
Lynn Segal, 72, was among about 20 people who gathered Sunday. They had finished their march in front of the courthouse when a rope of fire shot in front of her and then "two big flares.