Weeks after 5-year-old Lens Joseph was struck and killed by a school bus in Hyde Park, details are emerging about the driver who was involved. The driver, Jean Charles, resigned on Wednesday. Officials confirmed that Charles had an expired school bus certificate at the time of the crash.

The man driving a school bus that struck and killed a 5-year-old boy in Boston late last month had an expired school bus certificate at the time of the collision and has since resigned, Boston Public Schools confirmed Thursday afternoon.

There are protocols and this is a case where it looks like the responsibilities and obligations of the vendor were not held up,” Mayor Wu said Thursday night.