Police still don't know what a teen intended when he brought a knife and a loaded gun to Clarksburg High School the day after the shootings in Florida.
Alwin Chen is locked up without bond, charged with handgun possession and carrying a gun on school grounds.
It was a worried student who warned a teacher here that Alwin Chen might be armed. Security took him in an office and they say he admitted he had a loaded 9mm handgun in his book bag and a knife in his front, shirt pocket.
But we just don't know at this point if he was armed because he was scared, if he was showing off, or if he intended to hurt someone.
The woman who came to the door at Chen's modest town home in Germantown declined to open it.
"Not home," she said, and then nothing.
What appears to be the teen's Facebook page has just a photo, a quote from the late actor Peter Ustinov, and a picture he posted last year saying "The road to hell is paved with good intentions."
Clarksburg Principal Edward Owusu says he's just as mystified as anyone.
"I don't know about his motives. He was a good student... is a good student. Did what we ask students to do, participate in athletics, clubs. Come to classes."
Clarksburg has stepped up security. The flags are flying at half-staff for the murdered children in Florida. Like the high school in Parkland, there are no magnetometers at the entrances. And the doors are unlocked at the beginning and end of the school day.
"My reaction was 'Oh my gosh, he was here all day,'" said Tina Smith, whose son is a student at Clarksburg. "They didn't find the weapon until almost two o'clock, at the end of the day.' So was he going to do something at the end of the day? Who knows."
We might have found out more if Chen had gone before a judge Friday. But his hearing has now been postponed until Tuesday.
The principal says this was a case where someone saw something, said something. And it worked.