Armed robbery committed by foreigners?

A news report from ATV about a robbery that took place at a convenience store in the city of Minami Alps in Yamanashi prefecture:
The criminals were wearing black and had their faces partially covered. One was armed with a rifle-like object, another with a pipe, and a third was carrying a large knife. There may have also been a 4th criminal.

Police apparently told ATV that the criminals may have been foreign because of the way they asked for money (“カネ、カネを出せ”). However, the Yomiuri and Sankei newspaper articles I found on the internet do not mention anything about foreigners.
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