D.C. fire department internal affairs officials are investigating whether firefighters cheated while testing to become nationally certified as emergency medical technicians.

The tests were recommended by a task force that called for all District firefighters to become cross-trained as nationally certified paramedics. The task force was set up as part of a settlement with the family of David Rosenbaum, a retired New York Times reporter who was assaulted in 2006 but was mistakenly assessed as being drunk. He died two days later.