New charges have been filed against six young males in connection with a feud that resulted in multiple fights and a barrage of threats at Garden Spot High School, officials said.

Investigators say two groups are responsible for the series of fights, which occurred at a youth center and a park, plus the threats that followed.

Caleb Horst, 22, and five boys ages 15 to 17 now face multiple charges in connection with the confrontations. Horst was at Lancaster County Prison on Tuesday, while the juveniles were committed to Lancaster County Youth Intervention Center or released to their parents.

All the suspects are from north or northeast Lancaster County.

Three of the males, including Horst, were charged this week with felony aggravated assault for seriously injuring a 20-year-old New Holland man last month at an East Earl Township park.

Mystherson Maxy suffered two strokes after he was punched and kicked in the head by the group March 28 at Overly's Grove Park, court documents show. He was admitted to Lancaster General Hospital in serious condition. Maxy was part of a group that went to the park to watch an arranged fight between two of the boys who were later charged. As those two boys slugged it out, police said, fights broke out between the spectators.

According to police, Maxy was jumped by Horst and two boys. A friend later drove the injured Maxy to the New Holland Ambulance building, where police found him unconscious in the back seat of a car. The males who allegedly beat Maxy also were charged with reckless endangerment for striking the boy with a vehicle as they fled the park, police said.

East Earl Township police Chief Kevin McCarthy said the assault by vehicle was "no accident."

"It was intentional," McCarthy said. A 17-year-old New Holland boy was driving the car, the chief said. The boy who was hit was not seriously injured.

Two days before the park fights, a 15-year-old boy was jumped at The Cross Connection youth center on West Main Street, New Holland, police said. Nelson Griffey, 18, and two 17-year-old boys beat the teen, who was treated at LGH for head injuries, police said.

In the days after the fights, students flooded the halls of Garden Spot High School with threats of retaliation. Two boys, including the 17-year-old charged in the youth center beating, made threats severe enough to warrant being charged by police.

New Holland police filed the threat charges as well as charges stemming from the youth center fight.

McCarthy said Tuesday that the investigation was "extensive," involving countless interviews to get to the bottom of what transpired between the feuding groups.

E-mail: bhambright@lnpnews.com