See the face of the suspect in murder case of transgender girl

Joshua Vallum, 28, was arrested on June 2, the day police recovered the body of 17-year-old transgender teen, Mercedes Williamson, buried in his father's backyard.

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Vallum appeared in court today for a preliminary hearing in the murder case.

The murder case in a rural Mississippi town gained national attention last month, when Caitlyn Jenner mentioned Williamson as just one of the many transgender teens murdered in the U.S. this year.

Prosecutors say Vallum admitted to his father on June 1 that he killed someone and hid their body in the wooded area behind the house.

Vallum allegedly told police that the remains belonged to Williamson, and his admission was confirmed with a DNA analysis.

Since then, the member of the Latin Kings gang has been held on $1million bail for first-degree murder charges.

While the motivation behind the attack is still not known, police have said that they are looking into whether Williamson's status as a transgender woman may have played a role in her cruel end.

'We're looking at several different things. It could have been gang-related, it could have been a hate crime, we're not certain yet,'Shonna Pierce, public information officer for the George County Sheriff's office, said.

'We're still in the process of investigating this murder. Mercedes deserves justice and we're working diligently to make sure that she gets justice.'

'If that's the case, could face not only murder charges, but federal hate crime charges.'

At the time of her death, Williamson had apparently become estranged with her family and had moved to nearby Theodore, Alabama, where she was sleeping on the couch of 41-year-old friend, Jeanie Miller's trailer, since September.

Miller says the last time she saw Williamson was on May 30, around 2pm, when the teen left to go spend some time at 'the bay' with a friend.

Miller remembers seeing Williamson get into an unknown silver vehicle and then driving off.

Read: 41-yr-old woman conspires with 17-yr-old lover to kill her husband

When Williamson didn't return to the trailer for several days, Miller called the friend who she thought had picked Williamson up and the girl told her that the teen was dead.

'I couldn't believe it,' Miller told the . 'I don't want to hear. I miss how she flipped her hair. I miss the crooked teeth with that beautiful smile. ... I can smell her. I just keep wanting her to walk through that door. ... I'll never have nobody like her again. That is barely something that crosses people's lives anyway. She is the most beautiful person.'

While police have not yet revealed how Williamson died, remarks on a tribute page to the teen say stab wounds were found on her body.

Williamson, who was born male and named Michael Wilkins by her parents, was an aspiring cosmetologist who friends say also enjoyed spending time outdoors.

Miller said she regarded Williamson 'like a daughter'. She became the ninth known transgender woman killed in the U.S. for 2015, according to data from the National Coalition of Anti-Violence Programs.

Caitlyn Jenner referenced Williamson's death while accepting the Arthur Ashe courage award at this year's ESPYs.

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