A peculiar announcement was broadcast throughout the Silja Serenade ferry during its journey from Stockholm to Helsinki late Monday. Passengers on the ferry reported hearing a coded message directed towards the crew, prompting concern. An eyewitness confirmed the unusual alert was announced over the ship’s loudspeakers. The code, referred to as “Mr Heko,” indicates a serious situation unfolded onboard. Details regarding the nature of the incident remain unclear, but the use of a code suggests a pre-planned emergency protocol was initiated. The alert caused alarm amongst passengers traveling between Stockholm and Helsinki. Authorities have not yet released information about the nature of the "Mr Heko" code or the incident it signifies.