The Nikkei 225 index experienced a significant drop, with reports varying on the extent of the decline, ranging from 1,113 yen to 1,694 yen at one point. The decline is attributed to concerns over Middle East risks and surging oil prices, as well as a semiconductor shock possibly triggered by South Korea. The index's morning close was reported at 67,744 yen, with certain stocks such as Kioxia and Yaskawa Electric being notably affected.