The ministry said Monday the four were passengers on the helicopter but did not identify them. Spanish media reported they were a couple and their two children. The helicopter's Italian pilot also was killed.
News reports say the two victims from the plane were Spaniards. Local media reported the helicopter was on a sightseeing tour when the crash happened Sunday. Authorities observed a minute of silence for the victims outside the regional government headquarters in Palma de Mallorca.
Spain's Defense Ministry says a military aircraft crashed into the sea off southeastern Spain on Monday.