Two members of staff at a college have been injured following reports of shots being fired in West Sussex.
There is a large police presence at the scene of the apparent shooting near Crawley College.
An 18-year-old man from Crawley has been detained and is in custody, Sussex Police said, and a firearm and a knife were seized.
The two people hurt were treated for minor injuries, which were not gunshot wounds, according to the force.
People are being urged to stay away from the area, and staff and students were evacuated from the educational facility.
A statement from Sussex Police said: "Police received multiple calls shortly after 3.10pm.
"One man has been detained at the scene by police. People are asked to stay away from the area.
"Staff and students are being evacuated away from the college.
"Two people have suffered injuries, but these are not believed to be serious."
An earlier tweet from Sussex Police said: "One man has been detained following reports of shots being fired near Crawley College.
"There is a large police presence at scene and in the local area."
A tweet from the National Police Air Service South East Region said it had deployed a Redhill aircraft to support Sussex Police in connection with the incident.
Crawley College said it was not aware of any serious injuries after the incident.
The college tweeted: "We are aware of an incident at Crawley College this afternoon. Sussex Police are present on the scene and a man has been detained.
"We are awaiting further information from the police. We are not aware of any serious injuries. Our priority remains the safety of students and staff."