Iranian army says at least 104 killed in US attack on Iranian warship last week

A US submarine sank the frigate Dena in the Indian Ocean off Sri Lanka's southern port city of Galle

An explosion on what the US Department of Defence says is an Iranian warship, at the sea, in this screengrab obtained from a handout video released on Mar 4, 2026. REUTERS

The Iranian army said on Sunday that at least 104 people were killed and 32 were wounded in an attack by the US on an Iranian warship off Sri Lanka's coast last week.

A US submarine sank the frigate Dena in the Indian Ocean about 19 nautical miles off Sri Lanka's southern port city of Galle on Wednesday, killing dozens of sailors and dramatically widening Washington's pursuit of the Iranian navy.