A $100,000 reward has been offered by law enforcement for information leading to the arrest of the 31-year-old conservative activist's killer. The FBI issued grainy photos of a person of interest – not yet a suspect – and asked for the public's help identifying him.

The suspected shooter of conservative activist Charlie Kirk is still at large following his assassination on Wednesday at Utah Valley University in Orem, Utah.

According to media reports, activist Charlie Kirk was shot and killed at a Utah college event