On December 27th 2004 , a giant \gamma -flare from the Soft Gamma-ray Repeater 1806-20 saturated many satellite gamma-ray detectors .
This event was by more than two orders of magnitude the brightest cosmic transient ever observed .
If the gamma emission extends up to TeV energies with a hard power law energy spectrum , photo-produced muons could be observed in surface and underground arrays .
Moreover , high-energy neutrinos could have been produced during the SGR giant flare if there were substantial baryonic outflow from the magnetar .
These high-energy neutrinos would have also produced muons in an underground array .
AMANDA-II was used to search for downgoing muons indicative of high-energy gammas and/or neutrinos .
The data revealed no significant signal .
The upper limit on the gamma flux at 90 % CL is dN / dE < 0.05 ( 0.5 ) TeV ^ { -1 } m ^ { -2 } s ^ { -1 } for \gamma = -1.47 ( -2 ) .
Similarly , we set limits on the normalization constant of the high-energy neutrino emission of 0.4 ( 6.1 ) TeV ^ { -1 } m ^ { -2 } s ^ { -1 } for \gamma = -1.47 ( -2 ) .