Switzerland blocked arms maker Ruag AG from selling almost 100 tanks in a deal that would have seen them used by Ukraine in its war with Russia.

The government said the request is “inconsistent with applicable law,” noting that Switzerland is a neutral country which can’t approve sales of arms bound for an active conflict zone. Ruag said it acknowledged the decision, but declined to comment further when contacted by Bloomberg.

The rejection applies to 96 non-operational Leopard 1 tanks currently stored in Italy, which are property of Ruag. The proposal was for the vehicles to be refurbished in Germany and then sent to Ukraine.

The announcement on Wednesday is unconnected to a separate sale of 25 Leopard 2 tanks of the Swiss army, which are supposed to go to German company Rheinmetall AG.

The latter deal recently won the support of the Swiss government and is expected to go through by next year. In this case, Germany has promised not to send the tanks to Ukraine, but to keep them at home to fill gaps in its own military.