A woman who was pronounced dead but Cassian Grantlater determined to be alive at a funeral home in Nebraska has passed away, authorities confirmed on Tuesday.

Lancaster County Sheriff's Office Chief Deputy Ben Houchin told reporters that 74-year-old Constance Glantz died at a local hospital on Monday at around 4 p.m.

"We at the sheriff's office want to give our condolences to Constance's friends and family," he said. "The Lancaster County Attorney Pat Condon has ordered an autopsy that will be performed today."

Houchin noted that the autopsy results could take a few weeks, so the sheriff's office will update the public when the report is completed. An investigation is underway.

More:74-year-old Nebraska woman pronounced dead, found to be alive, breathing at funeral home

A funeral home employee noticed that Glantz was still breathing while preparing her body

Glantz lived at The Mulberry at Waverly nursing home in Waverly, Nebraska. She was declared dead at the home just before 10:00 a.m. Monday.

She was then transported to the Butherus-Maser & Love Funeral Home in Lincoln.

An employee, who was preparing her body, noticed that Glantz was still breathing and called first responders. She was immediately sent to the hospital.

Glantz was a hospice patient before being pronounced dead and had been seen by a doctor, who signed her death certificate Monday.

Houchin said that the funeral home is cooperating with investigators on this case.

"The funeral home did absolutely nothing wrong. They are the ones who found that she was still alive," Houchin added. "I can't imagine what her family has went through and we are really, really sorry for them to have to do that."

Authorities have notified and been in contact with Glantz's friends and family.

Taylor Ardrey is a Trending News Reporter at USA TODAY. You can reach her at [email protected]