Let’s put it this way-
It’s gonna be damned near impossible to implicate someone or a group who carried it out.
BUT....
IF they can, that person or group of people need to be arrested and executed without delay.
A worker at a catering event with an aerosol spray NO WAY will the be able to find this person, all workers with sanitizer spray bottles no way will they find them BUT they did this not a doubt in my mind!!