Defence secretary confirms strike on Iris Dena in first US attack on Iranian forces outside Middle East during conflict

Middle East crisis – live updates

The US has carried out a submarine torpedo strike that sank an Iranian warship off the south coast of Sri Lanka, according to the US secretary of defence.

Pete Hegseth confirmed that the US was behind the deadly strike on an Iranian frigate that killed at least 80 people, as it was sailing close to the Sri Lankan coast.

“An American submarine sunk an Iranian warship that thought it was safe in international waters,” Hegseth said. He said the attack was carried out by a US navy submarine late on Tuesday night.