TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2767 SUBJECT: GRB 041006 : Optical follow-up observation at KISO DATE: 04/10/06 14:21:15 GMT FROM: Yuji Urata at RIKEN H. Fukushi(Tokyo Univ.), M. Isogai(Tokyo Univ.), and Y. Urata(RIKEN) " We have detected the candidate reported by G. da Costa et al. (GCN 2765) in R-band at Kiso observatory. The brightness at about 55 min after the burst is R~17 compared with USNO-A2.0 stars." This message may be cited.