India, March 9 -- A newly surfaced video released by Iranian state media appears to show a US cruise missile striking a compound in southern Iran where a deadly February 28 attack killed more than 165 people, many of them schoolchildren, raising fresh questions about the origin of the strike.

The 18-second clip, posted by Iran's Mehr News Agency, shows a missile slamming into a building inside a walled complex in Minab, a city in Iran's Hormozgan province. Smoke can already be seen rising from another part of the compound where the Shajareh Tayyebeh girls' elementary school had been hit moments earlier.

The school strike, which took place during the opening hours of a broader US-Israeli campaign against Iran, killed between 165 and 180 ...