Investigators are trying to figure out who killed 15-year-old Nicholas Kunselman and Stephanie Hart, 16. No weapon was found at the scene, reports The Denver Post. Deputies searched a trash bin behind the store and a roof top across the street, apparently looking for it.
The surveillance videotape from the restaurant where they were shot is unlikely to provide clues, said Jefferson County Sheriff's spokesman Steve Davis. The Rocky Mountain News quotes a family friend as saying the surveillance camera wasn't working.
The two sweethearts were shot at a Subway sandwich shop near the school, their bodies discovered early Monday. Last April, a shooting rampage at Columbine left 15 people dead.
Friends said Hart enjoyed sports but was quiet and didn't go out much except to stop by the sub shop to see Kunselman. He had worked at the shop for only a month but had won the manager's confidence and often was assigned to close the restaurant at 10 p.m., said J.J. Hodack, a co-worker.
"Obviously, our boss trusted him. He's a good worker," Hodack said.
When news of the two students' deaths circulated the school yesterday, "it was real similar to the first tragedy that happened," said Mike Sheehan, the Columbine student body president. "A lot of the kids were running through the halls crying, tears, shocked and upset that something else happened at the school."
Sheehan, 18, spoke to CBS Co-Anchor Jane Clayson about how the Columbine students are coping with two more violent deaths.
Sheehan, a senior, is a peer counselor at the school, but on Monday, "there wasn't really much advice to give," he said. "It was just a state of shock and nobody wanted to talk. They were just upset."
The main question students are asking is "When will it end?"
"For me trying to graduate, it's hard to focus on learning and all the clubs and activities when there's all these big hurdles around us," he added.
The other question Sheehan is asking is, "What can we do to move on from this and prevent it from happening again?"
He points out that the community has been really resilient. "All the kids at Columbine, too. We'll have to pick ourselves up again. I think we'll be just as resilient as before."
At the same time, the violence has made people fearful.
"I work at a local restaurant just like this Subway over here, and I'm just afraid," Sheehan says.
The high school has increased counseling staff and mental health workers at the school, helping the students out.
"Anybody that needs to talk can find someone to speak with," said Sheehan.
Columbine students and reltives of the victims gathered in the sandwich shop parking lot, placing bouquets just outside police lines. They also wrote chalk memorial messages.
CBS Worldwide Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report