Israeli forces killed four Palestinian "commandos" at sea off the the Gaza coast on Monday, adding to already taught tensions in the blockaded Gaza Strip.
Witnesses say they saw Israeli helicopters and naval forces fire on a vessel off the coast of Nusseirat, south of Gaza City, after which four bodied were pulled from the water.
Israel has described the "commandos" as "terrorists", but one survivor from the Al-Aqsa Martyrs' Brigade said the men were unarmed and merely training off the coast.