Authorities are investigating the death of a 4-month-old boy in Leominster last week. 

A spokesperson for the Worcester County District Attorney Joseph D. Early’s office said the infant died May 14. The office is conducting a death investigation, the spokesperson said. 

The Department of Children and Families is also investigating after they received a report about the incident, a spokesperson said Monday night.

First responders were called to the Whitney Street Apartment complex at 6:15 p.m. on Tuesday, May 14, Boston 25 News reported.

The boy appeared to be in cardiac arrest and paramedics were able to revive him as they transported him to a hospital, the news outlet reported.  He was later pronounced dead.

The Leominster Fire Department referred questions from Boston.com to the D.A.’s office. 

No further information was available Monday night.