India, Sept. 12 -- The FBI on Thursday shed light on the possible motive behind the assassination of conservative activist Charlie Kirk, saying the suspect, 22-year-old Tyler Robinson, had told his family just a day before the shooting that he disliked Kirk because he "spread hate."

While investigators stopped short of declaring an exact motive, the remark provides the first glimpse into Robinson's thinking prior to the attack.

Charlie Kirk, the CEO and co-founder of Turning Point USA and a prominent ally of former President Donald Trump, was fatally shot Wednesday while speaking at Utah Valley University.

Authorities said Robinson fired a single round from a distant rooftop before fleeing the scene, sparking a massive manhunt that end...