Peel police have arrested three men and issued a warrant for another following a brazen armed robbery at a Brampton water park last month.

Police say the men, three of whom were armed with handguns, barged into an office at the Wild Water Kingdom at around 5 a.m. on August 18.

Once inside, the suspects are alleged to have bound the hands of five employees who were counting cash from an earlier event before fleeing with an undisclosed amount of money.

Last week police executed search warrants in Mississauga, Toronto and Dundas in connection with the robbery, arresting three of the four suspects.

Aaron Francois, 26, of Mississauga, Dane Osbourne, 26, of no fixed address, and Nicholas Wilson, 36, of Dundas, Ont., are all charged with robbery. Francois and Osbourne are additionally charged with wearing a disguise with intent and using an imitation firearm.

Nicholas Wilson, 36, of Dundas, was also arrested during the search warrants and is charged with firearms-related offences, though Peel police told CP24.com that Wilson is not believed to have been involved in the robbery.

Peel police continue to search for David Clarke, 25, of Toronto, in connection with the robbery.

Investigators are asking anyone with information relating to this investigation to call them at (905) 453-2121, ext. 3410 or anonymously at 1-800-222-TIPS (8477).