BROOKLYN, Iowa -- Officials have ID'd a body that was discovered 
in Iowa on Tuesday as missing college student Mollie Tibbetts. 
And now a man has been charged in her murder.

Here's everything we know about the case.

RELATED: Official: Suspect held in death of Mollie Tibbetts, has 
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When did Mollie Tibbetts go missing?

Tibbetts was last seen going for a run on the evening of July 
18. She was reported missing after she did not show up for work 
and loved ones could not locate her on July 19.

Who was Mollie Tibbetts?

Tibbetts was a 20-year-old rising sophomore at the University of 
Iowa. She went to elementary school in the Bay Area but spent 
most of her adolescence in the small community of Brooklyn, Iowa.

Tibbetts was the middle child of Rob Tibbetts, who lives in 
California, and Laura Calderwood, who lives in Brooklyn. Mollie 
has an older brother, Jake, and a younger brother, Scott.

Over summer break she was living with her longtime boyfriend, 
Dalton Jack, and his brother Blake. She had a job with 
Unitypoint Grinnell Regional Medical Center working at a day 
camp, KCRG reports.

Home videos released after her disappearance show a young woman 
with a playful personality.

RELATED: Home video shows Mollie Tibbetts laughing, dancing

What do we know about the night Mollie Tibbetts went missing?

Both Jack brothers were out of town, so Tibbetts was home alone 
with the dogs. According to witness accounts and her Fitbit 
data, she went for a run around 7:30 p.m.

Loved ones have said that authorities told them Tibbetts made it 
home from her run and was inside on her laptop as late as 10 
p.m., though investigators have not officially confirmed this 
timeline. Jack said that he opened a SnapChat from his 
girlfriend around this time and she appeared to be inside, but 
it's unclear when it was sent.

Here's a look at what we know about the night Mollie Tibbetts 
disappeared, more than a month before her body was reportedly 
found.

Who is a suspect in the Mollie Tibbetts case?

A charge of first-degree murder has been filed against 24-year-
old Cristhian Bahena Rivera. If convicted, the charge carries a 
mandatory sentence of life in prison. Investigators say they 
used surveillance video in tracking down Rivera. The video 
showed Tibbetts jogging in a rural area near her hometown of 
Brooklyn, Iowa, as well as Rivera's car. Police had searched the 
area but noted her body was found in a field, covered with corn 
stalks. They had previously stated that Tibbetts' boyfriend, his 
brother and her two brothers were all ruled out as suspects.

What have been the major developments prior to Tuesday?

Authorities have been tight-lipped about the investigation, but 
here are some of the major stories that have happened throughout 
the case:

July 25: Authorities said Tibbetts' boyfriend is not a suspect 
and that they weren't ruling out abduction.

July 28: A search of a pig farm turned up no sign of Tibbetts. 
The pig farm is located in Guernsey, about a 15-minute drive 
south of Brooklyn.

Aug. 2: Authorities in Missouri announced they had investigated 
a possible sighting and that it was not Tibbetts.

Aug. 5: It was announced that the body of a young woman 
discovered in Iowa was not Mollie Tibbetts.

Aug. 6: Rob Tibbetts told ABC News he had a theory that someone 
who knows her took her.

Where was the body found?

A body which authorities believe to be Tibbetts was found in a 
rural part of Poweshiek County, where Brooklyn is located, AP 
reports. Local media outlets reported that a medical examiner 
arrived at a rural area near Guernsey.

When will we find out more?

Investigators will hold a press conference at 5 p.m. ET | 2 p.m. 
PT on Tuesday.

https://abc7.com/mollie-tibbetts-everything-we-know-about-the-
case/4020056/