Harold Henthorn took his wife, Toni, for an autumn hike in Colorado's Rocky Mountain National Park for their 12th wedding anniversary. As they climbed the rugged and steep terrain of Deer Mountain, they approached a ledge to take in the view better.

As Toni posed for a photo, she fell forward off the ledge, but autopsy reports are questioning if she fell or was pushed. The coroner wrote that homicide should not be ruled out, Yahoo News reported.

Henthorn, 58, was indicted this week by a federal grand jury, charging him with first degree murder in Toni Henthorm's death on Sept. 29, 2012. Details of the case have been kept under wraps, but prosecutors say that Harold Henthorn pushed his wife off the cliff with intention and premeditation. 

"I'm sure when all the facts are known in this difficult and complicated case, justice will be done," said Harold Henthorn's attorney, Craig L. Truman.

Toni Henthorn's brother, Todd Bertolet, said Harold Henthorn was controlling of the couple's finances and seemed dishonest about a business he said he owned so Toni Henthorn would move from Mississippi to Denver to be with him.

Toni Henthorn was a ophthalmologist and owned her own practice in Mississippi. Her and Harold Henthorn met on a Christian dating website after she had recently divorced.

After her death, family members found out she had three life insurance policies in her name totaling $4.5 million. One of the policies had a claim placed against it just two days after the woman's death.

The couple had a daughter, who is now 9-years-old.

Harold Henthorn had another wife, Sandra Henthorn, 30, who died in 1995 when a car jack slipped and crushed her while she was changing a flat tire.

This is not the first time a case like this has arisen. A woman named Jordan Linn Graham was convicted in 2013 for pushing her husband off a cliff in an incident very similar to Harold Henthorn's - and they were both the only witnesses to their spouses' deaths, Fox News reported.