"It's not acceptable. Absolutely not acceptable. We'll be doing all we can to make sure that we communicate with our fans that behaviour is not acceptable.
"They can't get glass into that place unless you've snuck it in. I can only assume that person has snuck it in. We believe we know who the person is."
However a lack of CCTV footage could hinder the investigation.
The incident brought back memories of the 'Bad Friday' clash with South Sydney last year when match officials were pelted with bottles by angry Dogs fans at ANZ Stadium.
Raiders coach Ricky Stuart said he was happy with the way the incident was dealt with by the Bulldogs and police.
"The Bulldogs have dealt with it very professionally and very well," Stuart said.
"Canterbury is a great club and they jumped on it quickly and we don't want those unruly fans in our game."
- AAP