CARIBOU, Maine — Steven Buck, who has served as Caribou’s city manager for 11 years, is resigning to become manager in Sanford.

Buck tendered his resignation during an executive session at a City Council meeting on Monday evening.

Buck said in a statement Tuesday that his decision was tough but he wanted to explore a new career opportunity.

He said that he was proud of the city and its employees.

“Caribou employees are dedicated to their service and for providing cost effective and efficient service deliveries,” he said, adding that their talent and dedication has helped him succeed.

He said that he will miss the business and personal relationships built during his years of service and hopes that these ties will remain as he moves to a new era in his career.

Buck’s resignation is effective July 12. He has accepted the position of town manager for the town of Sanford, which he anticipates starting on Aug. 6.

The City Council will meet in the near future to determine a course of action for filling the position. Buck has offered to assist with the transition.