Charlie worked alongside Alex on The One Show behind the scenes as a researcher, according to his Twitter page.
It didn’t take long for BBC viewers to weigh in with their messages of support, both to Charlie’s family and the rest of The One Show team.
“Thoughts and prayers are with the family of Charlie mott, your colleague RIP CHARLIE,” tweeted one viewer.
A second took to Twitter to say: “How very sad ~ RIP Charlie.”