A rash of robberies in the southern Saskatchewan appear to be connected following the fourth heist.

RCMP say the latest incident happened Thursday afternoon when a man walked into the bank in Lang and presented a note demanding cash. Officers believe the man is connected to similar robberies in Grenfell, Vibank and Sedley.

He was wearing a helmet with a visor each time and it's believed the man takes the cash, leaves on foot and walks to a waiting vehicle several blocks away. Police are hoping someone has caught a glimpse of the suspect or the vehicle.