A top acting State Department official deleted at least half a dozen tweets that ridiculed his new boss, Secretary of State Marco Rubio, including ones calling him “low IQ” and repeating a false rumor about Rubio’s sexuality.

Darren Beattie, the new acting undersecretary of state for public diplomacy, insinuated his boss was gay by referencing a baseless rumor from Rubio’s teenage years and boosted an unfounded claim that Rubio used to attend foam parties at gay nightclubs.