The Sacramento County Sheriff's Office said a missing 10-day-old infant and her mother, who officials say disappeared Wednesday "under concerning circumstances," were found safe.

Deputies say 10-day-old Riley Stella Ruth Hermosillo and her mother, 41-year-old Alexisse Marshall, both from Sacramento, were last seen around 1:30 p.m. in the area of Elk Grove Florin Road and Gerber Road in Elk Grove. A family member reported them missing at approximately 5 p.m. after returning home and discovering both were gone.

Because Riley is a newborn and there are specific concerns about Marshall's well-being, both were considered at-risk, investigators said. At this time, deputies emphasized there was nothing criminal known to be involved.

Officials did not say where the two were located. Their destination was unknown, but deputies said they were actively searching in the area of Gerber Road and Elk Grove Florin Road.