The Spanish Civil Guard has uncovered a stash of Swiss-made assault rifles which were originally meant for Ghana, according to Swiss news source swissinfo.ch.

The weapons, according to the report can be tracked back to Hungary but their appearance in Spain remains a mystery.

The discovery was made on August 4, according to the Swiss news source.

The report said the Spanish Civil Guard, a unit under Spain's Interior and Defence Ministries, uncovered the stash of 737 assault rifles and 72 grenade launchers, all made in Switzerland being sent to Ghana from the US.

The total value of the cache of arms has been put around $1.64 million.

The Spanish are now investigating the matter, the report said.

Citing Spanish authorities, the report said the arms were declared “disassembled”, but they were “new rifles in their original packaging. According to the accompanying documents – which had some information missing – the weapons were to be transported to Ghana from commercial gun dealers in the United States.”

A Swiss publication, Tages-Anzeiger which looked at the delivery’s export file, confirmed that the weapons were indeed made in Switzerland and the exporters expected the delivery to go to Ghana, via a dealer in Hungary, in 2010.

It also put the total value of the arms around $1.64 million, adding that the buyer, was given as the National Security Council of Ghana, noting that assurances were made that the weapons would not be sold on, and would be for military use.