The incredible find was hidden in an attic in a villa in Mölndal last autumn: ten kilos of gold and four kilos of platinum worth millions of kronor.
Since then, there has been a dispute over who owns the treasure.
Several different parties have claimed their right – including YouTube stars Carl Déman and Lucas Simonsson, who recently bought the property.
But also the two craftsmen who found the gold and handed it over to the police.
Decided in the district court
According to the administrative court, however, the property must not have been in anyone's possession at the time it was found for the law on found property to be applicable.
This means that the craftsmen do not have the right to the gold find.
"We have found it unlikely that the property would have accidentally ended up on the attic hidden behind some kind of shelf", says the court's chairman, chief magistrate Ann-Louise Björnsson in a statement.
The administrative court has not taken a stance on who is the rightful owner of the gold. It is instead a question that will be decided in the Göteborg district court.
Economic crime wave explanation?
Carl Déman has previously said in JLC's podcast "Between heaven and earth" that he initially thought it was a joke.
The police just said "I understand that you don't believe this" and that I could make a counter-call, I think that's what it's called. I called the police station and got it confirmed, that it was a police officer who had called. I didn't believe it until then, said Déman then.
Why the gold was hidden and how long it has been there is still a mystery. One of the theories is that it can be linked to an economic crime wave in the 1990s where, among other things, 60 kilos of gold disappeared, according to Göteborgs-Posten.
The suspicion has arisen because one of the bags found in the villa was stamped with "Tammstorp AB", a company that was at the center of the wave.
The former homeowner and his siblings (via an estate) have also made claims on the treasure.