One person has been killed and a police officer shot after an incident at a high school in Knoxville, Tennessee.
Police said they were called to Austin-East Magnet High School at around 3.15pm following reports of a male who was possibly armed.
“Upon approach of the subject, shots were fired,” said a statement, adding that the police officer was hit at least once.
They have been taken to hospital with injuries that are not believed to be life-threatening.
There are no other known gunshot victims, said police.
Another male has been detained for further investigation, while the identity of the person killed has not yet been revealed.
Police did not say if the suspected gunman had been taken into custody.
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The superintendent of Knox County Schools, Bob Thomas, tweeted that the building had been secured and students who weren’t involved had been released to their families.
A “reunification site” has been established at the baseball field behind the school, police tweeted.
Tennessee senator Marsha Blackburn tweeted: “I am heartbroken to hear about the shooting at Austin-East Magnet High School in Knoxville.
“My office has been briefed on the situation and I am praying for the community, including the officer injured in the line of duty.”
I am heartbroken to hear about the shooting at Austin-East Magnet High School in Knoxville. My office has been briefed on the situation and I am praying for the community, including the officer injured in the line of duty.
— Sen. Marsha Blackburn (@MarshaBlackburn) April 12, 2021
There have been several mass shootings in the US in recent weeks, including 10 people killed at a Colorado supermarket – one of them a police officer.
Eight people were also killed in shootings at massage parlours in and around Atlanta last month.
And a nine-year-old boy was among four people killed at a real estate office in Orange, California at the start of April.
President Joe Biden has announced new measures to tackle gun violence but his executive actions are limited and will still likely face legal opposition from gun rights supporters.
More ambitious goals include reintroducing a ban on assault weapons, lifting an exemption on lawsuits against gun makers, and passing a red flag law allowing people to be temporarily blocked from obtaining firearms.