A lawyer for the longtime girlfriend of Boston mobster James ``Whitey'' Bulger says his client plans to plead guilty to a federal contempt charge.

Catherine Greig is already serving an eight-year prison term for helping Bulger avoid capture during his 16 years on the run.

Defense attorney Kevin Reddington told a magistrate judge on Monday that Greig would plead guilty to the one-count contempt indictment. Prosecutors allege she disobeyed a judge's order to testify before a grand jury investigating whether ``third parties'' assisted and harbored Bulger.

Greig did not attend the hearing and Reddington said a formal plea agreement had not been filed.

Bulger and Greig were living in Santa Monica, California, when they were captured in 2011.

Bulger was later convicted and sentenced to life in prison.

Catherine Greig is already serving an eight-year prison term for helping Bulger avoid capture during his 16 years on the run.

Defense attorney Kevin Reddington told a magistrate judge on Monday that Greig would plead guilty to the one-count contempt indictment. Prosecutors allege she disobeyed a judge's order to testify before a grand jury investigating whether ``third parties'' assisted and harbored Bulger.

Greig did not attend the hearing and Reddington said a formal plea agreement had not been filed.

Bulger and Greig were living in Santa Monica, California, when they were captured in 2011.

Bulger was later convicted and sentenced to life in prison.

Defense attorney Kevin Reddington told a magistrate judge on Monday that Greig would plead guilty to the one-count contempt indictment. Prosecutors allege she disobeyed a judge's order to testify before a grand jury investigating whether ``third parties'' assisted and harbored Bulger.

Greig did not attend the hearing and Reddington said a formal plea agreement had not been filed.

Bulger and Greig were living in Santa Monica, California, when they were captured in 2011.

Bulger was later convicted and sentenced to life in prison. (Associated Press)