MOSCOW (Sputnik) – Two of the deceased civilians were Spaniards, the website of the A Semana newspaper said.
The barracks provided accommodation for the servicemen guarding a communications hub, while the civilians were involved in repairs works, the daily added.
All of the victims were reportedly shot down as police later detected nearby an abandoned vehicle with eight Kalashnikovs and ammunition inside.
An investigation into the massacre has been launched. Media suggests the mass killing might be an attack staged by drug gangs attempting to smuggle cocaine into the island nation.
