PALMDALE, Calif. - The Latest on a shooting at a Southern California school (all times local):

4:10 p.m.

Authorities say they caught a 14-year-old suspected of shooting a former classmate at a California high school after the boy called his father to say he fired his gun in the air and was headed to a grocery store near campus.

Los Angeles County Sheriff Jim McDonnell said Friday that the 14-year-old's father then called a family friend who's an off-duty police officer and told him where the boy was.

The off-duty officer, who works for Los Angeles police, then detained the teen.

Sheriff's spokeswoman Nicole Nishida says the 15-year-old victim was shot in the arm and is expected to fully recover.

The rifle used at Highland High School in Palmdale was found in a field near the school.

Investigators say the shooting stemmed from a dispute between the 14-year-old and the victim.

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10:26 a.m.

Officials say a 14-year-old high school student used a rifle to shoot a classmate at their high school in the California city of Palmdale and dumped the gun in the desert before he was caught at a nearby shopping centre.

Los Angeles County sheriff's spokeswoman Nicole Nishida says the 15-year-old victim was shot in the arm Friday morning and is expected to fully recover.

Investigators say the shooting stemmed from a dispute between the shooter and the victim, but are still trying to pin down the exact motive.

Authorities say the suspect ran off after the shooting and dumped the rifle along the way before he was caught in a shopping centre.

The FBI and agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives also responded to the scene.

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9:30 a.m.

Officials say a 14-year-old high school student has been taken into custody after shooting a classmate at their high school in the California city of Palmdale.

Los Angeles County sheriff's Capt. Darran Harris tells KTTV Friday that the student was taken into custody and a gun was recovered at the scene.

The shooting happened at Highland High School in the high desert Antelope Valley north of Los Angeles

He says one student was shot in the arm and the shooting stemmed from a dispute between the shooter and the victim. He didn't elaborate. The injured student is expected to make a full recovery.

Harris says the school is safe but remains on lockdown as officials worked to reunite students with their parents.

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8:45 a.m.

Officials say there's no evidence of a shooting at an elementary school in the California city of Palmdale.

The Los Angeles County sheriff's department said on Twitter Friday morning that the school has been searched and cleared.

Officials also said someone had called to report shots were fired in the vicinity of Manzanita Elementary School.

The sheriff's department says deputies searched the school and found no evidence of a crime.

A person was detained after deputies responded to a report of a man with a gun at Highland High School, which is about 7 miles (11 kilometres) away.

Palmdale is north of Los Angeles in the high desert Antelope Valley.

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8:32 a.m.

Los Angeles County sheriff's deputies have detained a person after responding to reports of a man with a gun at a high school in the city of Palmdale.

Sheriff's Sgt. Aura Sierra could not immediately provide more information about the person detained Friday morning said there has been no confirmation of a shooting.

She says deputies are searching Highland High School in the high desert Antelope Valley north of Los Angeles.

Sierra says someone also called to report shots fired in the vicinity of Manzanita Elementary School about 7 miles (11 kilometres) away.

She says there's no information about that caller and no confirmation of the report. Deputies are investigating.

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8:02 a.m.

Los Angeles County sheriff's deputies are responding to a report of a man with a gun at a high school in the city of Palmdale.

The Sheriff's Information Bureau says the report was received at 7:05 a.m. Friday and deputies were sent to Highland High School.

Deputy Charles Moore says there is no confirmation of an actual person with a gun or any shooting.

Palmdale is north of Los Angeles in the high desert Antelope Valley.

News from © The Associated Press, 2018