Custom JS loading twice

I have a custom js file defined in a site def. This gets injected into the master page he开发者_运维知识库ad as expected. However, something is also injecting another script tag into the body of the page and I cant find anywhere in my code that does this. Does anyone know what this might be or how I can trace it?

Ive checked for CustomJSUrl controls and the script name in my source and it’s only mentioned in the master page once.

Thanks

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So you have it referenced in your site definition and in your master page? That makes 2..