Sean Curran previously served as the special agent in charge of President Trump's security detail for four years and sprung to cover him on stage during the first assassination attempt against him in Butler,

Mr. Curran, a current agent, will take the helm of an agency that has been the focus of several investigations since the July assassination attempt against President Trump.

Curran was one of several agents who piled on top of Trump last July after a gunman opened fire on the then presumptive Republican nominee during a campaign rally in Butler, Pa.