The strike on a group of people also wounded others, according to health officials at the Shifa hospital, where the casualties arrived.
The Israeli military did not immediately respond to a request for comment.
The Gaza Strip has seen near-daily Israeli fire and strikes since a fragile ceasefire was reached in October, and more than 700 Palestinians have been killed since then, according to figures from the Gaza Health Ministry.
The ministry, which is part of the Hamas-led government, maintains detailed casualty records that are seen as generally reliable by UN agencies and independent experts.
But it does not give a breakdown of civilians and militants.
Since the Iran war began over a month ago, Gaza militants have sat out the conflict and haven’t claimed any attacks against Israel.
