It seems to be related to the same event as is being asked about at Meta SE in Massive user removal in one night?

As @Animuson has answered there:

One or more users deleted their profiles, and there's really not anything further we can discuss about the topic for privacy reasons.

I think the decision on whether to retain reputation on (self-)deletion of high voting users is taken before deletion of an account takes effect.

It seems to be related to the same event as is being asked about at Meta SE in Massive user removal in one night?

As @Animuson has answered there:

One or more users deleted their profiles, and there's really not anything further we can discuss about the topic for privacy reasons.

I think the decision on whether to retain reputation on (self-)deletion of high voting users is taken before deletion of an account by SE staff takes effect.