Evidence continues to mount that the U.S. was responsible for the deadly school strike in southern Iran that killed scores of children as images taken near the school have emerged showing fragments of American-made missiles.

Missile debris is gathered on a table outside, a destroyed building is seen is the distance

A photo shared by Iranian state media purporting to show missile debris from the strike on the Shahjareh Tayyebeh School in Minab, Iran, on Feb. 28.  Islamic Republic of Iran Broadcasting

The missile fragments purported by Iranian state media to have struck the school bear the markings of an American Tomahawk missile, according to experts who reviewed imagery obtained by NBC News and others, shared by state media, that appeared to show the fragments on a table close to the scene.

The videos obtained by NBC News appeared to show close-ups of the same set of missile fragments. They could not be geolocated as a result, whereas other wide-shot imagery shared by state media appeared to align with previously confirmed video and satellite imagery of the school site. Meanwhile, voices heard in video obtained by NBC News appeared to reflect a southern accent consistent with Minab.

NBC News could not independently confirm where, when or how the missile fragments were found or whether they were connected to the school strike. It was also unclear exactly who recovered them.

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