The man accused of killing a 4-year-old family member last week appeared in Broomfield County court Tuesday afternoon where he was formally charged with two counts of first-degree murder.

Emanuel Doll, 25, sat inside the courtroom Tuesday beside his attorneys and kept his head tilted down throughout the hearing.

Doll was arrested April 27 after police discovered the 4-year-old boy inside the home at 4221 West 136th Avenue in Broomfield. Police said the boy suffered “a massive amount of trauma” and was pronounced dead at the scene.

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Doll was charged with two counts of first-degree murder. The second count specifies that Doll was in a position of trust in relation to the 4-year-old victim. The charges could carry a sentence of life imprisonment without the possibility of parole or the death penalty.

State social services officials have also opened an investigation that appears to center on the boy’s death.

The Colorado Department of Human Services has publicly reported the opening of an investigation by its Child Fatality Review Team. Although the department does not identify the subject of its investigations by name, it reported that the case involved the death of a 4-year-old boy on Thursday – the same day Broomfield Police were called to the home on West 136th Avenue and found the boy’s body. The posting on the human services website notes that the boy or his family had prior “involvement” with the Department of Human Services.

That review could take months.

Records obtained from Broomfield Police show police received 14 calls from Doll residence on West 136th Avenue since March 24, 2016. Police redacted the descriptions of six of those calls. Records showed one call for “harassment/threat,” three calls for “citizen assist,” one call for a welfare check and two calls for medical assistance.

Police records also showed Doll was once arrested and charged with third-degree assault after an incident involving his mother at the home on West 136th Avenue.

On the night of Dec. 3, 2014, Emanuel Doll’s twin sister called police to report her brother had assaulted their mother, Charlotte Doll. According to the report, Charlotte told officers Emanuel “gets really mad at her when she makes noise” like playing the piano. Charlotte had just finished playing the piano when Emanuel “came up and punched her in the back of the head.” Charlotte told police this was the fifth time Emanuel had assaulted her.

The report showed Emanuel Doll was arrested for the assault after he was pulled over in a car near the family’s home. Doll told officers he was upset his mother walked around the house partially nude after getting out of the shower. “It was disgusting so I slapped her in the back of the head,” Doll told officers.

Police records detailed another arrest on April 13, 2016 that ended with Broomfield Police officers using a Taser on Doll. The police report detailed a “criminal episode of criminal mischiefs” that lasted 25 minutes and involved shattered windows and a broken flower pot.

Officers chased Doll who “began throwing rocks at officers and was tazed (sic),” according to the report.

A preliminary hearing is set for 9 a.m. July 14 in Division A of Broomfield County District Court.