A 16-year-old has been arrested and charged in the fatal shooting of his 14-year-old Havre de Grace High School schoolmate, according to police.

Jai’den Winchester died after he was found shot in the head and was in cardiac arrest shortly before midnight on Saturday in the 200 block of Center Deen Avenue.

Aberdeen Police said a 16-year-old boy, also a student at Havre de Grace, is being charged as an adult with first- and second-degree murder, first-degree assault, reckless endangerment and firearms offenses.

Detectives found no evidence to indicate this was an accidental shooting despite some comments on social media, police said.

“The Havre de Grace Middle/High community is saddened to share the passing of Jai’den Winchester,” Havre de Grace High School Principal Brad Spence wrote in a letter to families sent Sunday. “We are deeply saddened at the loss of Jai’den and will always remember him as a friend and Warrior forever. We will focus our concern on the well-being of our Warrior family as we cope with this tragic loss.”

Anyone with information is asked to contact Detective Corey Lightner at 410-272-2121 or clightner@aberdeenmd.gov.

“It’s sad that we have juveniles running around our country, not just in Aberdeen, it’s all over the country, that we have juveniles running around with weapons and feel the need to use those weapons,” Aberdeen Police Sgt. Jason Neidig told WJZ. “It’s gut-wrenching.”

The school’s principal said a crisis team will be available for students and staff. “We should expect and try to understand there will be a variety of emotions and responses to what has occurred,” Spence said. “The most important thing we can do is to be supportive of one another and encourage an open expression of feelings.”

The principal said the school has a plan to respond to the event when students return and that teachers and counselors have recevieved guidelines on how to discuss the death with students.

Winchester is listed on an athletic website as playing junior varsity football for Havre de Grace High School.

Spence said in an email to The Banner Sunday morning that he was with Winchester’s family and friends “processing our loss.” The school will be closed until Wednesday for a scheduled break for Harford County schools.

In Facebook posts, a few people describing themselves as his former teachers paid tribute to Winchester. “I taught Jai’den when he was in first grade many years ago. He helped me become a better teacher that year, and I remember lots of laughs with him in the class,” one teacher wrote.

The shooting marks the second time a Harford County Public Schools student has been killed by gun violence this fall. Warren Curtis Grant, 15, of Edgewood, was shot in the bathroom of Joppatown High School by a fellow student the first week of school. He died at the Johns Hopkins Hospital.