Dustin Kopp

Conservative activist and Turning Point USA co-founder Charlie Kirk died Wednesday after he was shot at an event at Utah Valley University.

Conservative activist Charlie Kirk was shot and killed on Wednesday while speaking an event at Utah Valley University.

A person has been arrested in connection with the shooting that killed conservative activist Charlie Kirk, sources said.

The FBI is now offering a $100,000 reward for information leading to the arrest of the suspect in the fatal shooting of conservative activist Charlie Kirk. On Thursday, officials released surveillance video and new images of the alleged shooter. CBS News' Carter Evans reports.

A pack of lions mauled a longtime zookeeper to death when he stepped out of his vehicle, officials said.