An ABC news team in Australia abandoned its Brisbane radio studio yesterday after an investigation revealed there is something about the workplace causing breast cancer.

It's not clear what the cause may be, but the five-month-long investigation concluded a breast cancer cluster is related to the office environment.

Twelve women who worked at the Brisbane Toowong office had been diagnosed with breast cancer over the past 11 years. Eight of these women worked in the newsroom. Most had been there for more than five years.

ABC managing editor Mark Scott would not move his staff earlier this year when 100 staff members walked off the job in July, demanding relocation. He said it would take evidence -- not just suspicion -- of a breast cancer cluster for him to agree to relocation. Now he has evidence.

The investigation report shows women who worked at this office reported breast cancer at a rate 11 times higher than the general working community.

In addition to the relocation, all female staff at Toowong office were offered free mammograms and free counseling services during the investigation. Yesterday, Scott extended the offer to women at other ABC sites in Australia.