Montgomery County, Maryland police announced Thursday night that Laura Wallen was shot in the back of the head, according to autopsy findings.
Tyler Tessier, Wallen's boyfriend and the father of her unborn child has been charged with her murder. He's been charged with first-degree murder.
At a bond review Thursday afternoon, the judge deemed him a danger to the community and denied bond.
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Wallen, who went missing last week, was a social studies teacher at Wilde Lake High School. She was four months pregnant.
Police found Wallen's body buried in a shallow grave in a wooded area in Damascus.
According to the Montgomery County Police Department, on Sept, 4, Wallen's sister reported Laura missing, saying that she last saw her a couple days earlier, but had not been able to contact her since.
Police released on Thursday that Tessier had taken Wallen's phone and texted her sister from it.
The text conversation from #LauraWallen to her sister. Police claim Tyler Tessier is who was using Wallen's phone. @ABC2NEWS pic.twitter.com/fIRAIfFxOn
— Skyler A. Henry (@SkylerHenry) September 14, 2017
Wallen was last seen with Tessier on Sept. 2 at a Safeway store in Olney.
On Sept. 7, an apartment complex employee reported finding Wallen's license in front of a dumpster a couple days earlier. After realizing whose license it was, the employee called police.
Police then found Wallen's car, but the front license plate had been removed.
Police had interviewed Tessier multiple times while Wallen was missing. Police said each interview had conflicting statements regarding Wallen's disappearance. During questioning, he did admit that he was engaged to another woman.
Tessier also admitted to throwing away Wallen's phone and driver's license in a dumpster and removing her license plate from her car.
Detectives found a friend of Tessier who admitted she drove him to the apartment complex where Wallen's car was found and was told to lie to police if they asked about it.
On Sept. 13, officers executed a search warrant at Tessier's friends home Tessier had reportedly been spending a lot of time there since Wallen went missing.
During the search, a rescue team found a freshly dug area in a field near his friend's property. Wallen's body was found buried in the ground.
Tessier was arrested on Wednesday in Hyattstown and charged with first degree murder.
"Highly unlikely" Tessier will be charged for additional murder, referring to #LauraWallen unborn child @ABC2NEWS
— Skyler A. Henry (@SkylerHenry) September 14, 2017
During the week that Wallen was missing, Tessier was present with her family during a press conference on Monday.
During the press conference, Tessier pleaded for Wallen to come home.
"There's so many people, so many people that miss you," he said Monday. "There's so many people that were out looking. We haven't slept, we haven't eaten. We're just looking and praying that you're safe and I'm asking that you can just let us know that you're safe."
Despite his emotion, police suspected Tessier was involved in Wallen's disappearance.
There is still no information on a motive.
