Phoenix police said the school was not under an active threat, but that one of the two people stabbed had "life-threatening injuries."

A teenager died and another was injured after a reported fight, the Tracy Police Department announced on Tuesday.

Two students were involved in a stabbing at Maryvale High School, resulting in one death and another in custody.

A 26-year-old man has been arrested on suspicion of murder after another man was fatally stabbed in north-west London. The Metropolitan Police was called to Monks Park, Wembley, at about 18:10 BST on Tuesday, following reports of a stabbing. A 38-year-old man was treated for stab wounds but died at the scene.

Police said the stabbing occurred after a fight broke out at the Travelodge on Laurel Fort Meade Road in Laurel.

The man, 32, took himself to Northwestern Memorial Hospital after being stabbed about 3 a.m. in the 500 block of North State Street, police said.

A man has been taken to hospital with life-changing injuries after a stabbing outside a property in Derby, police have said. Emergency services were called to Pear Tree Crescent in Normanton just after 12:25 BST on Wednesday. The road was closed during the early hours but reopened just before 05:45, Derbyshire Police said.

A student was stabbed to death and his alleged attacker was hospitalized after the two teen boys got into an argument inside an Arizona high school classroom just two weeks into the school year — sending students and their parents into panic mode.