TITLE: GCN CIRCULAR NUMBER: 3303 SUBJECT: GRB 050421: NIR observations re-examination DATE: 05/04/21 13:01:48 GMT FROM: Daniele Malesani at SISSA-ISAS,Trieste,Italy V. Testa, L.A. Antonelli (INAF-OAR), D. Fugazza (INAF-OABr), L. Di Fabrizio, G. Tessicini (INAF-TNG), and D. Malesani (SISSA), report on behalf of a larger collaboration: After the revision of the XRT position (Godet et al., GCN 3301) of the X-ray afterglow of GRB 050421 (Barbier et al., GCN 3296), we re-examined our TNG K-band images (Fugazza et al., GCN 3300). We find no sources within the revised XRT error box down to the 3-sigma limit K > 18.6. This message can be cited.