MADISON, Wis. -- A Dane County judge's decision is expected on Monday regarding a controversial 911 call apparently made by slain University of Wisconsin-Madison student Brittany Zimmermann.

TALKBACK: What Do You Think?

Media outlets, including WISC-TV, are urging the court to release the recording under Wisconsin's open records law. Attorneys for the media said that the public deserves the right to know what's on that tape.

Investigators and prosecutors have argued against the tape's release, saying it could jeopardize their investigation into who killed Zimmermann last April in her campus-area apartment. Zimmermann's parents, through their attorney, have also urged the judge not to release the recording.

Judge Richard Niess on Friday heard about six hours of testimony, including arguments from both sides in the case.

The call has been the subject of ongoing controversy. Zimmermann, a 21-year-old Marshfield native, apparently made the 911 call before she was killed on April 2. A Dane County report indicates the 911 dispatcher didn't follow proper protocol and didn't dispatch police after the call came in.

A warrant made public earlier this month said the call that lasted 57 seconds contains the sounds of screaming and a struggle.

Dane County 911 center officials said the operator couldn't hear those sounds, didn't call back the number as required and didn't send any officers to investigate. No officers were dispatched to the area where the cell phone call originated until 48 minutes later, after Zimmermann's fiancé found the woman dead.

Stay tuned to WISC-TV and Channel 3000 for continuing coverage.