Article continues below advertisementA "person of interest" is in police custody after right-wing activist Charlie Kirk was shot dead at the age of 31.Utah Governor Spencer Cox confirmed hours after Kirk's death on Wednesday, September 10, that a suspect had been identified in the fatal shooting of the conservative media personality."The investigation is ongoing, but I want to make it crystal clear right now to whoever did this: We will find you, we will try you, and we will hold you accountable to the furthest extent of the law," Cox declared during a news conference.