The alleged assassin of conservative activist Charlie Kirk 'lived with a transgender partner', it was claimed last night.

Father-of-two Mr Kirk, 31, was gunned down on Wednesday as he answered a question about transgender gun violence in front of a 3,000-strong crowd at Utah Valley University.

Last night, multiple media outlets in the US claimed Tyler Robinson, 22, the student who was arrested over Mr Kirk's murder, was living with a partner who was 'transitioning from male to female'.

The partner – who shared a three-bedroom apartment with Robinson in Utah – is said to be 'fully co-operating' with the FBI.

The room-mate is understood to have handed over text messages allegedly sent by Robinson after the killing, apparently saying where to retrieve the rifle used in the assassination after it was left in a wooded area.