Tuesday, a woman and her boyfriend were arrested following the death of the woman's eight-year-old son, according to officials.

The son’s skeletal remains were found inside a Houston-area apartment with three surviving but apparently abandoned siblings, officials added.

The 31-year-old boyfriend Brian W. Coulter was charged Tuesday with murder, while the 35-year-old mother Gloria Y. Williams was charged with felony injury to a child by omission, and tampering with evidence (human corpse), tweeted Harris County Sheriff Ed Gonzalez.

Both of the mother and boyfriend were booked into the Harris County Jail without bond pending appearances before a magistrate. However, it was not immediately clear if the two had attorneys.

According to Gonzalez, more charges are possible.

The Harris County Institute of Forensic Sciences in Houston listed the initial cause of death as “homicidal violence with multiple blunt force injuries.”

A spokesperson for the institute said they could not provide additional details.

Additionally, a spokesperson for the Harris County Sheriff’s Office said he could not immediately provide any more information because the agency was still investigating the death.

A 15-year-old boy, one of the surviving siblings, called the sheriff’s department two days before the incident and told authorities his brother had been dead for a year and the body was inside the apartment, according to the law enforcement agency.

Deputies found the teen and two other siblings, aged ten and seven, living alone in the apartment, Gonzalez said.

The 15-year-old told authorities his parents had not lived in the apartment for months.

Gonzalez said it appeared that the surviving children were “fending for each other,” and the oldest sibling was taking care of the younger two.

Gilliland added that their apartment didn’t have any power and a neighbor had helped the children by charging a cellphone for them and buying them food.

The younger children appeared to be malnourished and had physical injuries, according to the sheriff’s office.

All three siblings were transferred to a hospital and treated.

All of the children last attended school in May last year, said Craig Eichhorn, a spokesperson for the Alief school district.

He added that school officials attempted an unsuccessful home visit in September 2020.

Monday, a judge granted the Texas Department of Family and Protective Services temporary custody of the three children.

Investigators are still trying to determine why no one living in the same apartment complex had noticed anything unusual, Gilliland said.

Highmark Residential, which runs the apartment complex, did not immediately return a call seeking comment on Tuesday.