closing spam bugs

Hello help-gnats readers,

I'm relatively green as gnats user with write access, so bear with me.

I failed to find a way to close bug reports that are spam, without
needlessly sending a notification message to the fake originator.
Did I overlook anything here?  If not, then you may view this as a
feature request.  :-)

This is (not my) Gnatsweb v2.9.3, Gnats v3.113.1, by the way.

Cheers,
Ralf