Three men, one of whom was armed, held up a store on Courtright Line on October 9th, getting away with cash and merchandise.
The suspect with a weapon was taken into custody a few hours later.
The 32-year-old Walpole Island man is charged with robbery with a weapon, possession of a dangerous weapon, and possession of stolen property.
Anyone who can help police track down the other two suspects is urged to call Lambton OPP or Sarnia-Lambton Crime Stoppers.