A 21-year-old woman, who attended a prestigious military academy high school, has been charged with the murder of a married lawyer found stabbed to death in an upscale DC hotel. Jamyra Gallmon, of Washington D.C., was arrested on Wednesday, according to police. She has been charged with first-degree felony murder while armed over the killing of 30-year-old David Messerschmitt. Police had released surveillance video of a 'person of interest' who was seen entering the Donovan Hotel shortly after Messerschmitt texted his wife Kim Vuong at 7.45pm to tell her he would be home in an hour on February 9. Messerschmitt never returned and the next day he was found dead after being stabbed in the back at his hotel room with 'various credit cards strewn about'. Scroll down for video . A woman has been arrested in connection to the murder of 30-year-old Washington, DC lawyer David Messerschmitt. Above, the 'person of interest' who was caught on surveillance video entering the hotel where Messerschmitt was killed on February 9 . Jamyra Gallmon attended Forestville Military Academy in Maryland and was an exemplary student, a cteacher said on Thursday . David Messerschmitt (pictured with his wife Kim) was found dead in his DC hotel room in February. Police have not revealed exactly what he was doing at the hotel. A computer, lubricant, condoms, cell phone and enema kit were recovered from the scene . Police sources told NBC Washington that the woman in the video is Gallmon and that she went to the hotel that evening for a 'sexual encounter'. Among the  items recovered from the room were a computer, lubricant, condoms, cell phone and enema kit, Fox DC reported. Fingerprints were also found in the room. Law enforcement sources told the Washington Post that it was believed Messerschmitt's death was motivated by a robbery. Gallmon's mother spoke to NBC and said that her daughter had never been in trouble before and had an ambition to join the military. Gallmon attended Forestville Military Academy in Maryland, a coach told Fox 5, on Thursday and had been an exemplary student. Coach and teacher, Vincent McDuffie, told the station that she had wanted to play basketball in college but had suffered a knee injury. He said that her supportive family always turned up to watch her high school games. Gallmon graduated from the military academy in 2011. The 21-year-old is due in D.C. Superior Court on Thursday. Authorities  have arrested a Washington, DC woman named Jamyra Gallmon for the crime. On the left, another view of the person of interest on CCTV and on the right, Messerschmitt. Police sources told NBC Washington that the woman in the surveillance video is Gallmon . Widowed: Messerschmitt texted his wife Kim Vuong on February 9 that he would be home in an hour but never showed. Police still haven't said what he was doing at the hotel . Gallmon's mother said that her 21-year-old daughter (pictured) had never been in trouble before and had an ambition to join the military . According to the police report, Messerchmitt left his work at law film, DLA Piper, around 7.45pm on February 9 and texted his wife a couple of hours later to say he would back at their Capitol Hill home in an hour. The couple reportedly had not seen each other since February 8, but Vuong didn't think anything seemed wrong with her husband. She reported him missing at midnight, saying it was unlike him to disappear and that usually he got home before her. Messerschmitt was found dead in his room the next day. Police have not revealed exactly what he was doing at the hotel. Last week, Messerchmitt's wife gave an emotional speech, asking for help in finding her husband's killer. 'The world has lost a good person. David's family: a son and brother, and I have lost everything: my husband and my best friend. In one day, I lost the most important person in my life and the man I loved so much. And I have no answers,' she said. A Cincinnati native, Messerchmitt attended Ohio State University where he met his wife. He went on to study law at Boston University before working at a firm in Chicago. He then worked at two more firms in the D.C. area before transferring to DLA Piper last year, as a specialist in intellectual property law. Emotional: Last week, Messerschmitt's wife, Kim Vuong, held a press conference, asking for help in locating her husband's killer . Police sources said Gallmon was at the Donovan hotel (pictured) for a 'sexual encounter'. Messerchmitt was found stabbed to death in his hotel room on February 10 .
Jamyra Gallmon, 21, was arrested on Wednesday on first-degree murder charges related to the February 9 death of David Messerschmitt .
The 30-year-old lawyer told his wife he would be home that evening but never showed; he was found stabbed to death the next day at a hotel .
Items recovered from the room included a computer, lubricant, condoms, cell phone and enema kit .
Police sources told NBC Washington that Gallmon was at the hotel that evening for a 'sexual encounter'
Gallmon's mother spoke with NBC and said her daughter had never been in trouble before and was considering joining the military .