This is from this site
http://grb.sonoma.edu/
This is what is said about the 06 02 18 Burst
Interestingly, Swift detected gamma rays from this same location over a month earlier, on January 17. Spectra taken of this event also show features similar to those seen in a supernova, when a massive star explodes. It seems likely that we are seeing a supernova-GRB connection, a rare event and one that is highly anticipated.
Then it says this about the 06 01 17 burst
There is also a bright galaxy very close to the position of the burst, and the redshift of this galaxy is z=0.042, indicating a distance of 562 million light years. That is actually very close for a GRB, which is consistent with the GRB brightness. However, estimates of the redshift of the GRB using other methods have yielded inconsistent results, with values ranging from z=0.45 (4.6 billion light years) to z=1.3 (8.8 billion light years). Hopefully follow-up observations will clear up this issue.
It is my contention that you have to be very careful when you are looking at all this. They say close to a galaxy, coincident with, apparently within etc, and then when you see the kind of redshift questionabilty here, you have to wonder how they can be making a galaxy or SuperNova conection at all.