At 5 pm on Tuesday, rescue personnel and police were alerted to Sandvik Coromant in Gimo. Staff had found two men in their 40s and 60s in a hydrogen tank, and both were found dead.

The tank was blocked off pending a technical investigation.

The day after the incident - which is being investigated as a work environment crime by causing another person's death - the Swedish flag is waving inside the area at half mast

- It is very tragic, safety is a top priority with us. Now we have to get to the bottom of what happened, says Martin Blomgren.

"Production work is paused"

There should be no witnesses to the incident.

- The normal production work is paused for summer breaks, then you do maintenance work on, among other things, the hydrogen tanks. This means that no one else should have seen what has happened, he says.

In the clip above, he tells more about the event.