This type of message delivery was known as a "dead drop".
They claim to be seeing not fluctuations, but dead drops.
So, unless he was really hot for the chef at Giovanni's, even money it's a dead drop or a meet of some sort.
A website made for his 2010 hit, the dead drop.
Dan and I established a "dead drop" at a point on one of the walks we both had access to.
It seems like such a "drop dead" to the rest of us in the building.
I don't leave them laying around in a dead drop.
He leaves a fake message for superiors in a dead drop.
Following the instructions given to him in Moscow, he found the dead drop easily enough.
He then notes that they probably didn't get his dead drops.