What secret signs in driveways could mean

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What secret signs in driveways could mean

A resident in a rowhouse settlement in Upper Austrian Marchtrenk discovered suspicious symbols on the asphalt of his parking lot. What do such signs on the ground mean? The "Krone" asked experts what to do in such a case. Is it harmless graffiti or secret messages from criminal gangs? If residents discover suspicious symbols at or near their home, not only alarm bells but also the phones of the executive ring. This week, markings were discovered…