Three boys and a girl, ages 12 to 16, were arrested by police Monday afternoon in connection with a shot fired behind Tioga Middle School earlier in the day.
The school was locked down for about 30 minutes after students reported seeing a gun fired on Santa Ana Avenue behind the school. Susan Bedi, Fresno Unified School District spokeswoman, said school officials locked down the campus about 2:40 p.m.
Police said no one was injured.
Bedi said school was out, but about 350 children were there for the after-school program, a tennis match against Carver Academy Middle School and a baseball game with Fort Miller Middle School. The lockdown was lifted about 3:10 p.m.
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The four juveniles face charges ranging from negligent discharge of a firearm, illegal possession of a firearm and ammunition and obstructing a police officer.
Police said one shot was fired into the air from a chrome revolver when two groups of juveniles got into a fight on Santa Ana south of the school. Both groups scattered after the shot was fired.
Police are still investigating the shooting. "It is too early to tell if this incident is gang-related," said Jeff Cardinale, police spokesman.
Cardinale said police will have a heightened presence near the school at least through today.
Bedi said calls would go out to parents Monday night and letters would be sent home with students today.
Jeanette Howard didn't know about the shooting as she waited across the street in her car to pick up her two children who attend Tioga.
"That's really scary," she said, "but the lockdown is good, because it safeguards our kids."