The 36-year-old suspect in the 28 June Cayman National Bank heist was arrested in Jamaica and will be returned here to face charges, police said.
Four men were already charged in the bank robbery that was foiled when their getaway vehicle smashed into an armoured van that was parked in front of the bank offices, located in Buckingham Square.
A fifth suspect, a 40-year-old woman, was arrested a few days after the robbery took place.
The men appearing in court 3 August on charges related to the robbery were: Rennie Cole, Andre Burton, George Mignott and David Tomasa.
All four pleaded not guilty to one count of robbery in which $502,436.17 was stolen in both US and CI currencies.
The men also pleaded not guilty to one count of possession of an unlicensed firearm from the incident in which they were alleged to have used an imitation firearm with the intent of committing a robbery.