Mr Gray said the state will seek a death penalty for Mr Robinson, adding, “Charlie Kirk’s murder also strikes a more personal and intimate chord.”
Mr Landau added that he had informed the consular office to revoke visas of those caught celebrating Mr Kirk’s assassination.
The arrest of the suspected shooter comes about 48hours after the incident.
This comes less than 24 hours after Mr Kirk was fatally shot in his neck while he was speaking at the university on Wednesday.
Mr Trump and Vice President JD Vance have urged people to pray for Mr Kirk.
