Dominic Sylvester, 16, of Bowdoinham, was arraigned on Friday in West Bath District Court for the murder of Beulah “Marie” Sylvester.

Sagadahoc County deputies found the 55-year-old woman seriously injured and unresponsive in her home last Monday morning. She died Monday night at Maine Medical Center in Portland.

Dominic Sylvester was arrested Wednesday after his release from Mid Coast Hospital.

Sylvester faces a charge of depraved indifference murder.

His attorney, Thomas Berry, indicated Sylvester will enter a denial of the charges.

Sylvester will turn 17 later this month and, according to court documents, lived with Beulah Sylvester at 946 Post Road in Bowdoinham. She was listed as his guardian.

Judge Beth Dobson granted Berry’s request that the affidavit in support of probable cause and the affidavit in support of a search warrant be sealed out of concern that the details could taint the jury pool.

Assistant Attorney General Megan Elam, who is prosecuting the case, didn’t object to sealing the documents.

Sylvester will undergo a diagnostic evaluation, as he could still be tried as an adult. The judge also granted a request by Berry that Sylvester undergo a state forensic evaluation for “abnormal condition of the mind.”

Berry said he believed Sylvester understands the charges, but that his client was overwhelmed.

Sylvester will remain at Long Creek Juvenile Detention Center in South Portland. Berry agreed to keep Sylvester detained, saying there was “no place for him.”

• DOMINIC SYLVESTER, 16, of Bowdoinham, remains at the Long Creek Juvenile Detention Center in South Portland.