Now being widely reported. INdia had invted an unarmed Iranian ship, and and American ship to be part of a Naval exercise. As part of the terms, the ships had to be unarmed so the Iranian ship arrived unarmed. at the last minute Trump decided to attack Iran, so the US pulled out of the exercise, and then sank the unarmed Iranian ship with a torpedo
Even Indian sources are confirming it happened and India is horrified as it's a war crime.