Lau Kar-leung zombie?!

[J.J.Hayden]

This was brought to my attention over on KFF, Lau Kar-leung credited as a zombie in the 2014 film Zombie Fight Club.
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This film was released a year after Lau's passing. Obviously there's the possibility that he filmed a cameo before his death, I find it highly unlikely in this situation and believe this is more likely to be another actor with the same name. Any thoughts on this?