BROCKTON >> A 12-year-old Brockton boy who spent a month in the hospital after falling through the thin ice of a pond has died.

The Enterprise reports that the principal of his school sent an email to staff saying that Charles "CJ" Thompson died Monday.

Charles and a 9-year-old boy fell through the ice on the pond on Jan. 9.

While the younger boy survived, Charles was trapped under the ice for several minutes before passers-by and firefighters pulled him free.

He was without a heartbeat and not breathing but regained a pulse on the way to the hospital.

Charles had been in a coma at Tufts Medical Center in Boston before he died.

He was a sixth-grader at Plouffe Academy.