Officers made an arrest just before 9 p.m. on the 7800 block of East Spring Street and took a man in for questioning for what they say is a probation violation.
Despite the presence of ATF agents, investigators did not confirm that the arrest is linked to the firebomb attack where a person set a man on fire outside a Long Beach grocery store Friday.
Surveillance video shows a man throwing a Molotov cocktail, setting the victim on fire.
