Matteo Bottarelli, 44, savagely beat Trevor McGuire over the head with a pickaxe and stabbed Gideon Tesfay in the neck with a scalpel in a frenzied attack on June 21, 2023.
Matteo Bottarelli, 43, is alleged to have chased colleagues with a mattock - a large pickaxe - around the grounds of Central Middlesex Hospital in north-west London.