Dhaka, June 2 -- Several people suffered burns and other injuries Sunday in the US state of Colorado in what the FBI called a "targeted terror attack" against demonstrators seeking the release of Israeli hostages held in Gaza.

Police in the city of Boulder said a man was taken into custody. They were more cautious in presuming a possible motive for the attack, which multiple sources said was committed against members of the Jewish community during a peaceful gathering.

Local media cited eyewitnesses describing a man throwing something resembling a homemade Molotov cocktail at the group.

In one video apparently of the attack, a shirtless man holding clear bottles in his hands is seen pacing as the grass in front of him burns.

He can be...