Police said two other persons have been taken into custody in relation to the fatal attack on a British couple.
Police said the Major Crimes Unit made the arrests on Monday January 20.
“Currently, five persons are in police custody and assisting with investigations,” police said in a news release Tuesday afternoon.
Police said charges are expected to be laid “at a later date”.
A police report states that 62-year-old Roger Pratt was killed and his wife, 60-year-old Margaret Pratt, injured during an incident aboard a vessel named “Magnetic Attraction” which was docked at the Seaport in Vieux Fort on January 17, 2014.
Police have now confirmed that Pratt died of asphyxia secondary to blunt force trauma following a post mortem examination conducted on Monday January 20.
“On arrival, the officers received information that three armed men had boarded the vessel, attacked and injured the occupants before they fled. At the time of the incident, the vessel was occupied by Margaret Pratt and her husband, Roger Pratt.
“Within minutes of the robbers fleeing, Margaret went in search of her husband and found him floating in the nearby waters. Roger was retrieved and transported to St. Jude Hospital via ambulance along with his wife. He was pronounced dead on arrival while Margaret was treated and discharged,” the police said.
The Ministry of Tourism has condemned the incident and has pledged its full support to Margaret and the police investigations.