Recently, the Green Bank Telescope (GBT) confirmed the detection of a repeating fast radio burst (FRB). The super-sensitive GBT was able to confirm that the radio burst from FRB 171019, initially detected by the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope, did repeat.
This detection lends credence to the theory that almost all fast radio bursts repeat, just very, very quietly.
Read more about this on the American Astronomical Society (AAS) website.