UPDATED: Human remains found in Texas belong to woman who went missing more than three years ago

UPDATED at 1:21 E.T.: Sources have confirmed that the remains discovered on Wednesday belong to Christina Morris.

Construction workers discovered human remains on Wednesday morning in Anna, Texas, that investigators have said may belong to Christina Morris, the 23-year-old woman who went missing from Plano, Texas, nearly 3 1/2 years ago.

Police notified Morris' family about the discovery, though her identity has not yet been confirmed by the Collin County Medical Examiner. Anna is about 40 miles north of Dallas and about 25 miles from Plano where Morris disappeared.

"Our family has been notified, but nothing has been confirmed. Please keep Christina and our family in your thoughts and prayers," the family wrote on their "Help Find Christina Morris" Facebook page.

Morris' family has continued hanging flyers and searching for their daughter since her disappearance Aug. 30, 2014. Previous searches had taken place in the area where the remains were found when workers were clearing brush for a new housing addition.

What happened?

Morris disappeared in the early morning hours of Aug. 30, 2014, from Plano, Texas, where she was last seen on video walking into a parking garage with Enrique Arochi, an acquaintance she'd known since high school.

Police arrested and charged Arochi with aggravated kidnapping Dec. 13, 2014, after investigators discovered Morris' DNA in the trunk of his car.

In September 2016, Enrique Arochi, 27, was convicted and sentenced to life in prison for Morris' abduction, but he has long maintained his innocence.

It was the start of Labor Day weekend. Morris and Arochi had been out partying that night with some mutual friends.

A little before 2 a.m., Morris sent her boyfriend a selfie. That was the last time he heard from her.

Just before 4 a.m., Morris and Arochi were caught on video walking into a parking garage at Plano's Shops at Legacy where their cars were parked facing each other.

There had been a lot of partying that night, and Arochi admitted to drinking, smoking marijuana, and taking the prescription drug Adderall, a stimulant used for ADHD.

"I mixed drugs. I mixed alcohol," Arochi told the Dallas Morning News in a prison interview in December 2016. "It was just a really fuzzy day."

A video camera captured Arochi's Camaro driving out of the garage three minutes after the pair was seen walking into the garage. Morris' vehicle never left its parking space.

"Enrique is guilty, plain and simple," Jonni McElroy, Christina Morris' mother, told the Morning News last year.

Was the family still searching for her?

Morris' parents have never given up on finding their daughter. They have organized public searches nearly every weekend since Morris's disappearance.

Flyers were plastered all over North Texas after Morris went missing, and hundreds, if not thousands, have assisted in the searches that have turned up nothing.

Another search was scheduled for March 10.

What else?

Last year, Arochi's lawyer filed an appeal with the 5th District Court of Appeals in Dallas asking for a new trial.