//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 30056 SUBJECT: IceCube GCN alert 135302_36915486.amon retraction DATE: 21/05/20 02:07:17 GMT FROM: Marcos Santander at U. Alabama/IceCube The IceCube Collaboration (http://icecube.wisc.edu/) reports: On 21/05/19 UT IceCube issued an alert (https://gcn.gsfc.nasa.gov/notices_amon_g_b/135302_36915486.amon) reporting the detection of an event with a high chance of being of astrophysical origin. Upon further examination by the IceCube collaboration, the event is found to be likely due to atmospheric background and not a high energy astrophysical neutrino. We apologize for any confusion this may have caused. The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.