India, Sept. 15 -- President Donald Trump has stated that many individuals are under "major investigation" for the killing of Charlie Kirk. However suspected killer is still refusing to cooperate with investigators as he is detained under special supervision in a Utah jail.

Tyler Robinson, 22, was taken into custody on Friday in relation to Kirk's fatal shooting at Utah Valley University. He later admitted to his father, Matt Robinson, that he had shot Kirk, 31, in the neck, according to authorities.

Matt, the owner of a family-run construction firm, later called the police.

Amid Kirk's murder investigation, Trump has stated that "a lot of the people that you would traditionally say are on the left" are "already under major investigati...