A 3-year-old boy who suffered a traumatic injury at his Roxbury home on Sunday night died on Tuesday, police said, just days after a care provider told state child welfare officials that the boy was well.

According to police, officers went to 23 Alpine St. around 9:40 p.m. Sunday after receiving a call for a “trauma incident’’ and found the boy unresponsive. He was rushed to Boston Medical Center, where he died.

Boston police confirmed the death of the child, whose name has not been released, in a statement on Tuesday. Police had no comment on a possible cause of death, and no arrests were made.

Andrea Grossman, a spokeswoman for the state Department of Children and Families, said in a statement that the agency is “working in collaboration with law enforcement during their ongoing investigation, and is additionally conducting an internal investigation of this case.’’

The agency said that it had an open case with the boy’s family and that a social worker last contacted a care provider for him on Friday. At the time, DCF said, it was reported that the boy was well-fed, clean, and had no behavioral issues.

The agency has taken custody of another child who lives in the home, though state officials have not disclosed that child’s age or relationship to the deceased boy.

Jake Wark, a spokesman for Suffolk District Attorney Daniel F. Conley, said in an e-mail that “the medical examiner has not yet offered an opinion as to manner of death. The facts and circumstances of the child’s death remain under investigation.’’

A piece of yellow police tape remained draped over a fence in front of the three-story home on Tuesday evening. No one answered when a reporter knocked on the front door, which was adorned with a red holiday wreath.

A neighbor who would only give his first name, Rich, expressed shock when he was told the boy had succumbed to his injuries.

“I was praying for the kid,’’ he said.

Another man who declined to give his name said he has lived in the neighborhood for about a year and could not recall another incident at the boy’s address that involved police.

The child’s death is the latest in a string of tragedies in recent years involving DCF, which has long faced scrutiny for its handling of cases involving children who died.

Among the children whose cases raised alarms were Bella Bond, a 2-year-old Dorchester girl whose body was found on Deer Island in June 2015, and 4-year-old Jeremiah Oliver of Fitchburg, who disappeared in September 2013 and whose body was found in April 2014 off Interstate 190 in Sterling.

Governor Charlie Baker, who took office in January 2015, announced in November that the state was scrapping a policy of dividing DCF cases into high-risk and lower-risk categories, a practice that began in 2009.

Ten children assigned to a lower-risk category of cases died between 2009 and 2013, according to a report from the New England Center for Investigative Reporting that the Globe published last fall.

On Tuesday, DCF said the social worker and supervisor assigned to the Roxbury case are both licensed. The agency said it is in the process of implementing system-wide changes, including new intake and supervision policies to support social workers.

Boston police said in their statement on Tuesday that anyone with information about the Alpine Street case is “strongly urged’’ to contact homicide detectives at 617-343-4470. Anonymous tipsters can also contact the department’s confidential tipline at 800-494-TIPS or text the word “TIP’’ to 27463.

Travis Andersen can be reached at travis.andersen@globe.com. Follow him on Twitter @TAGlobe.