It was in connection with a unloading work that the man at the age of 55 got the object over him. No person is suspected of any crime, but the police have launched a preliminary investigation into causing the death of another.
"There were several people at the workplace when it happened," said Eva Nilsson, press spokesperson for the Stockholm Police.
The police conduct a technical investigation of the accident site and the Swedish Work Environment Authority is informed.
The man's relatives are notified.