Niagara police have arrested two more suspects in connection with a robbery investigation last month in St. Catharines.
Police say three males confronted the victim at an apartment building on St Paul Street. After a violent struggle, the suspects fled the area.
The victim suffered multiple stab wounds to his back and face.
Thirty-six year-old Michal Szymczak from Hamilton turned himself into police on Thursday.
The other suspsect, Tyler Barberstock, also of Hamilton, was in custody on an unrelated manner.
Last month, police charged 35-year-old Shaun Taylor of St. Catharines with robbery.