Pending the results of a competency evaluation, any court proceedings regarding a 17-year-old Lawrence boy accused of killing his grandmother last December have been suspended.

The boy, Jaered Long, was arrested in late December after police found his 67-year-old grandmother, Deborah Bretthauer, dead in her apartment with “obvious traumatic injuries.” Long was 16 at the time.

Both Long and Bretthauer lived in the apartment at 1200 George Court.

Long faces a single count of first-degree murder in juvenile court. He pleaded not guilty to the charge.

On Monday, Douglas County District Court Judge Kay Huff ordered Long to undergo a competency evaluation by Bert Nash Community Mental Health Center, according to court records. All other activity regarding the case will be stayed until the evaluation is complete.

On March 8, prosecutors filed a motion to try Long as an adult. If found guilty of the charge in juvenile court, Long could face a maximum sentence of 60 months in prison, or to the age of 22. If the motion to prosecute Long as an adult is granted and he is found guilty, he could face more than 40 years in prison.

Requests for the arrest affidavit, a sworn document filed by police supporting a person’s arrest, were denied by Douglas County District Court.

Since Long’s arrest two additional felony charges have been filed against him.

On May 12 and June 9, Long was accused of battering a juvenile detention center employee, according to court documents. He faces two felony counts of battery against a law enforcement officer.

Long is scheduled to appear in court regarding the new charges at 1:30 p.m. on June 29.

Further information about the recent charges was not immediately available.