Rockville High Student Found Dead in Germantown

A Rockville High School student was shot and killed by a 31-year-old Army staff sergeant, who then turned the gun on himself inside his Germantown home, Montgomery County police said in a news release.

Michelle Miller, 17, of the 5100 block of Russett Road in Rockville, was found dead Monday morning in the home of Adam Anthony Arndt, 31, of the 12900 block of Pinnacle Drive, police said.

Investigators are treating the deaths as a murder-suicide. 

Police said Miller and Arndt knew each other because she had plans to enlist in the U.S. Army Reserve after she graduated from high school.

The bodies were discovered around 10 a.m. by police who were following up on a tip that the Miller was at Arndt’s residence, police said. Police had to force their way inside after they were unable to make contact.

In a letter sent home to parents, Rockville High principal Debra S. Munk described Miller as an active member of the senior class, an honors student and a member of the varsity lacrosse team. 

“For those of you who did not know Michelle, we ask that you respect our sadness and support us with your understanding,” Munk said in the letter.