As the investigation into Sandra Bland's death continues, a theory is quickly catching fire online related to her mugshot.

After the release of Sandra Bland's mugshot, certain observers noted its peculiar angle and in particular Bland's expression. This has led some to believe that the 28-year-old activist may have already been dead in the mugshot.

"Why is Sandra Bland lying down in her mugshot," asked Shinkoukei on Tumblr. "Why is she already in a jumpsuit and why does she look so disoriented if not already dying? Who thought that they'd be fooling anyone with this mugshot?"

During an interview with ABC News, Sandra Bland's sister Sharon Cooper discussed her sister's life before her untimely death, including the claims of Bland suffering from PTSD and depression.

"I think everybody has lows and highs and I think that, you know, she was having maybe a bad day that day," said Cooper.

"You know, I have to reiterate that the totality of that video does show that she was leaning more towards an inspirational perspective at the end and had remnants of hope and it was really just a way for her to share with the mass audience, you know, what she was feeling and letting them know that if they were too struggling, that there was a light at the end of the tunnel."

Cooper did confirm Sandra Bland's miscarriage in May 2014. Reportedly, Bland had written on a jail intake form she attempted suicide at that time, using pills.

"I have to tell you I am very, very concerned on behalf of my family," she said, "and I'm just, just astounded."