BOSTON (CBS) — Catherine Greig, the long-time girlfriend of former Boston mobster James “Whitey” Bulger, will plead guilty to contempt early next month, the United States Attorney for the District of Massachusetts announced Wednesday.

The one-count contempt indictment stems from her refusal to testify before a grand jury that was attempting to find out if anyone else helped or harbored Bulger while he was in hiding.

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Greig is currently serving eight years in prison for helping Bulger avoid capture during the pair’s 16 years on the run. They were captured in Santa Monica, California in 2011.