TITLE: GCN CIRCULAR NUMBER: 104 SUBJECT: GRB980613 BeppoSAX-NFI follow up DATE: 98/06/15 23:10:17 GMT FROM: SAX Science Operations at IAS/CNR Frascati GRB980613: follow-up with NFI: Luigi Piro on behalf of the BeppoSAX team report: Two previously unknown X-ray sources have been found in the WFC error circle by the MECS during the follow up observation started 9 hrs after the GRB. Source A is at R.A.(2000)= 10h17m53s Dec.(2000)= +71d27'24" Source B is at R.A.(2000)= 10h18m04s Dec.(2000)= +71d33'30" The error radius is 50". Source B does not show substantial variability. Source A shows a rather strong decay during the observation, and is very likely the X-ray afterglow of GB980613.