The family of four people killed in a helicopter crash near Superior earlier this year is speaking publicly for the first time — and pushing for federal action to prevent similar tragedies.

Officials said at least two people were injured in the crash, though the extent of their injuries remains unknown.

A helicopter that crashed into a Boynton Beach warehouse on Monday killing the two people on board was apparently experiencing an engine problem before going down, according to a newly obtained air traffic control radio transmission.