Student Justine Gross is said to have sent a chilling final message on Snapchat before falling to her death down a trash chute, her mom told NJ Advance.

The 19-year-old student tragically fell to her death when she plunged nearly a dozen stories down a trash chute last week, police said on Friday, November 19.

The sophomore is said to have written "something just happened" to a friend shortly before her fatal fall last Wednesday, per NJ Advance.

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Gross's body was found two days later at a landfill site after she was said to have been offered drugs by an unnamed man on the night of her death.

The message was timestamped 11:22 PM on Wednesday evening meaning it could be the last correspondence she sent before her death.

Now her mom Francoise Gross has told NJ Advance she met with the boy who is said to have offered her daughter drugs.

She said: "I said to him, 'you're the last one to see my daughter, what happened?' He said, kind of casually, like ‘she came down and I gave her a smoke.' He said she had a really bad reaction, a panic, or whatever and he was trying to take her back to her apartment on the 10th floor."

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Justine's body was found at a Pennsylvania landfill last Friday - a day after she was reported missing by her concerned family.

Security footage from the night of her death shows her running along the 11th floor before heading into the chute room, her mom says. At that point, she appears to be alone.

Gross's tragic death is still under investigation, but the State College Police Department said the incident "appears to be accidental in nature."

Police added that "all witnesses" are "fully cooperating with police".

Justine plunged nearly a dozen floors after she fell "inside an 11th floor solid waste disposal chute" in an apartment building and "into a waste receptacle on the ground floor," police said.

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"Video evidence suggests she was alone in the 11th-floor hallway and in the waste disposal room when she fell," police added.

Penn State spokesperson Lisa Powers told NJ Advance that it would be "inappropriate for the University to interfere with that investigation nor to address information that has not been publicly released."

"We are heartbroken for the family and friends of Justine Gross and offer our condolences to all who knew and loved her," Powers said in a statement.

"Penn State staff in Student Affairs and beyond are offering assistance to family and acquaintances who are mourning this loss."

A vigil was held for Justine on Thursday night outside the apartment building, and her funeral was held Saturday in New Jersey.

Featured image credit: Bana Al Bitar / Stockimo / Alamy

College student, 19, sent concerning final message to friend before falling to her death down trash chute