A 7-month-old baby girl went into cardiac arrest at a day care and later died, and Hemet police said Wednesday that an investigation is ongoing.

Firefighters were called to a home in the 1200 block of Stepstone Court around 8 a.m. Monday with reports of an unresponsive 7-month-old girl. There, they found Addison Watkins and began life-saving measures.

Addison was transported to a local hospital where she was pronounced dead, according to the Hemet Police Department.

Her mother, Kristin Watkins, dropped off Addison and her brother, 3-year-old Nolan Watkins, that morning around 7 a.m., a family friend said on a GoFundMe page.

Kristin Watkins learned her daughter was in full cardiac arrest around 8:30 a.m. and rushed to the hospital with her husband, Steve Watkins, according to the friend, Darnisha Tossell.

By the time the couple arrived at the hospital Addison was already pronounced dead, Tossell said on the GoFundMe page.

Addison showed no obvious signs of trauma, police said in a press release.

The Watkins family have been using the babysitter at the home since Nolan was 6 months old, according to the page. The babysitter was not a family member, Tossell added.

The police news release stated that the family has “used this residence as a daycare for the past two years.” Police are working with Riverside Child Protective Services to determine any licensing issues with the day care.

The family is accepting donations for funeral expenses on the GoFundMe page.