The FBI tried keeping the gender identity of the trans partner of Charlie Kirk's alleged killer a secret because he had been 'extremely cooperative' with authorities. 

Sources familiar with the case said that Lance Twiggs was 'aghast' when confronted by investigators over his lover's alleged assassination plot, saying: 'Oh my God, no.'

Investigators are looking into whether Kirk's alleged killer, Tyler Robinson, was motivated by his belief that the conservative activist's views on transgender people were hateful. 

After asking investigators if 'that's what happened', a horrified Twiggs agreed to cooperate and said 'here are all the messages', according to Axios.

Discord messages sent by the alleged killer, who was listed as 'Tyler', reportedly mentioned how he had wrapped his rifle in a towel and stashed it in some bushes near Utah Valley University, where Kirk was shot.