ReutersAt least six people have been taken to hospital after a shooting at Florida State University in Tallahassee.
One person was taken into custody after the shooting at the university's Student Union building on Thursday, according to CBS News, the BBC's US partner.
President Donald Trump said he had been briefed on the incident at the start of a meeting with Italian Prime Minister Giorgia Meloni at the White House, calling it "a shame, a horrible thing".
Florida Governor Ron DeSantis said: "Our prayers are with our FSU family and state law enforcement is actively responding."
One of the victims taken to hospital is in a critical condition, according to the Tallahassee Memorial Healthcare facility, with five others in a serious condition.
The university has cancelled all classes until at least Friday, and sports events were also cancelled for the weekend.
Police responded to an active shooter call at around midday local time, the university said.
It then sent an alert warning to students and those on campus to "seek shelter and await further instructions".
"One of my classmates got an alert on her phone and announced it to the rest of the class," Ava Arenado told CBS News Miami.
A briefing is expected later on Thursday.
