Spain is expected to send its first shipment of modern battle tanks to Ukraine by the end of next week, once officials have completed final firing tests in the field, the Spanish Defense Ministry said in a statement Thursday.

The six Leopard 2A4 tanks have been undergoing final checks at a weapons factory near Seville in southern Spain, the statement said.

Spanish Defense Minister Margarita Robles visited the factory Thursday and said four more Leopard tanks due for Ukraine will arrive there soon for inspection and testing.