A boy has told how he persuaded an armed teenage girl to drop the gun she had used to shoot a classmate in the second US school shooting of the week.

A 14-year-old US schoolgirl is believed to have shot her classmate after a long-standing dispute.

A 13-year-old girl is recovering from gunshot wounds after the second US school shooting in the past three days.

A shooting at a US Roman Catholic high school left one person injured and another in custody.