BANGOR, Maine — A Superior Court judge Monday ordered a local man convicted of kidnapping and killing his girlfriend to undergo a detailed psychiatric evaluation to aid her in sentencing him.

Justice Ann Murray said she wanted the examiner to determine if Zackery G. Mailloux, 23, of Bangor suffered from a mental illness, personality disorder or other psychological issues. The judge said she would use the results of the exam as part of her sentencing analysis in determining mitigating and aggravating circumstances.

A sentencing date has not been set.

Mailloux pleaded guilty in July at the Penobscot Judicial Center to one count each of intentional or knowing murder and kidnapping in the November 2013 death of Brooke Locke, a 21-year-old Husson University student with whom he shared an apartment on Essex Street. In exchange for his guilty plea, one count of gross sexual assault will be dismissed at sentencing.

There is no plea agreement concerning sentencing recommendations, defense attorney Jeffrey Silverstein of Bangor said in July.

Although Silverstein did not object to Murray’s order on Monday, he did tell the judge that his client would like to be sentenced as soon as possible.

Mailloux has been held without bail since his arrest on Nov. 18, 2013, and will continue to be held without bail until he is sentenced.

He faces between 25 years and life in prison on the murder charge. He faces up to 30 years on the kidnapping charge.

Assistant Attorney General Leann Zainea, who is prosecuting the case. said in July that she would recommend that Mailloux spend the rest of his life behind bars.

Silverstein has said that he plans to present mitigating factors, including Mailloux’s age and his cooperation with and confession to law enforcement, to Murray and seek a sentence of less than life.

If you or someone you know is experiencing domestic violence and would like to talk with an advocate, call 866-834-4357, TRS 800-787-3224. This free, confidential service is available 24/7 and is accessible from anywhere in Maine.