A 1-year-old boy found unresponsive while in his babysitter’s care in Massachusetts has died.

The investigation began as a medical call for an unresponsive 1-year-old boy named Noah Larson at an apartment on Kilby Street in Woburn. WFXT has confirmed the child was in the care of a babysitter, who was a family friend.

Sources told WFXT Noah's twin sister, Emmy, is at Boston Children’s Hospital undergoing medical evaluation.

The news station obtained the call log that shows a medical call came in just after 3 p.m. on Monday for an unresponsive 1-year-old. Records show he was breathing at the time.

No additional information on the case was immediately available.