Police officers rushed to Kat Von D's L.A. home Monday night -- even dispatching a HELICOPTER to search her neighborhood -- after she received an extremely unsettling phone call ... TMZ has learned.
Law enforcement tells us, Kat received the call from an unknown number on her home phone -- asking if it was Kat. The caller also asked Kat several personal questions before hanging up.
We're told Kat then received an unwanted text -- from the same person.
Kat -- believing the caller was on her property and fearing for her safety -- called police around 10:45pm ... and officers rolled up soon after in full force, sirens blaring.
We're told police even dispatched a helicopter to sweep the surrounding area. Nobody was found.
Police spoke to Kat and took an annoying persons report -- yeah, those exist -- and that was that. The LAPD is currently investigating.
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