http delete with REST

I am currently using Jersey Framework (JAX-RS implementation) for building RESTful Web Services. The Resource classes in the project have implemented the standard HTTP operations - GET,POST & DELETE. I am trying to figure out how to send request parameters from client to these methods.

For GET it would be in the query string(extract using @QueryParam) and POST would be name/value pair list (extract using @FormParam) sent in with the request body. I tested them using HTTPClient and worked fine. For DELETE operation, I am not finding any conclusive answers on the parameter type/format. Does DELETE operation receive parameters in the query string(extract using @QueryParam) or in the body(extract using @FormParam)?

In most DELETE examples on the web, I observe the use of @PathParam annotation for parameter extraction(this would be from the query string again).

Is this the correct way of passing parameters to the DELETE method? I just want to be careful here so that I am not violating any REST principles.