Officials say one of two teenage boys wounded in an unsolved shooting at Frederick High School is out of the hospital. A Johns Hopkins Medicine spokeswoman confirmed Friday that the boy has been released.
A second boy who was shot in the back is still hospitalized with what police say are non-life-threatening injuries.
This as students returned to class Friday, two days after gunshots were fired outside the school's gym during a junior varsity basketball game Wednesday night, under a heavier than usual police presence. Police are also expected to monitor a basketball game scheduled for Friday night.
Police still do not know who is responsible for the gunfire.
Things were a lot calmer on Thursday, but as one officer told us, it was a pretty chaotic scene here Wednesday night. There were no classes at the school on Thursday as staff regrouped.
"When we finally were able to get the building cleared, we sat down and did a debrief," said Frederick County Public Schools Superintendent Theresa Alban. "What did the police know, what did we know, what were the feelings about what would be the best decision to make."
She said the decision was made to cancel classes to give police an opportunity to do a complete investigation and gather evidence.
Police recruits did a line search just outside the gym where the shooting happened looking for evidence.
Investigators began reviewing statements from the hundreds of interviews they did Wednesday night as they try and pinpoint their suspects -- following every possible lead.
"We are talking about teenage kids in high schools, so there is a lot of chatter," said Frederick Police Capt. Richard Hetherington. "There is a lot of social media chatter about this. Gangs are certainly an avenue that we are looking at. We would be silly not to."
Investigators say the shootings are not believed to be random and believe the suspects and the victims knew each other.
Police also say they are looking into reports from students who say they saw four to five males -- dressed in big coats and hands in their pockets -- walk into the gymnasium during the game and leave shortly before shots were fired.
On Thursday, administrators made every effort to communicate with parents and students through Facebook, Twitter, text messages, their website and they released a video message from the superintendent detailing what happened and reassuring every effort is being made to ensure the safety of students.
Alban said steps moving forward will include close communication with police.
"They will work with us now strategically in when do we have more of a police presence there and when do we not," she said. "They are the professionals and they know what is going on in this community. Because we work so collaboratively with them, as a parent, I would feel very comfortable knowing that we are doing everything we can to keep your child safe."
The mayor of Frederick also released a statement saying:
"My thoughts and prayers are with the families and victims of the shooting last night at Frederick High School. The incident is currently under investigation by the Frederick Police Department. They are working in cooperation with the Frederick County Sheriff's Office, Maryland State Police, ATF, Frederick County Division of Fire and Rescue Services, and Frederick County Public Schools.
"I commend our police officers who answered the call to this incident, for their fast and efficient response. I also want to extend my appreciation to the other local law enforcement agencies that have and continue to help with the ongoing investigation.
"Frederick is strong and is not defined by incidents like the one that occurred last night. We remain committed to providing safety and security to everyone in our community."
The school district has also handed over surveillance video to police to help in their investigation.
School will be back in session here at Frederick High School on Friday.
Counselors will also be available for students who need to talk about what happened.
Anyone who was at the school and witnessed any portion of this incident is asked to call the Frederick Police Department at 301-600-2102 or 301-600-TIPS. Callers may remain anonymous.
Information from The Associated Press used in this report.