At least seven injured in shooting at US school
At least seven people have been injured in a shooting at a school in Denver, Colorado.
Douglas County undersheriff Holly Nicholson-Kluth said there was a possible eighth injury.
She said she did not believe there were any other gunmen, but tactical teams were still searching the school room by room.
She did not know if there were fatalities or other details about the victims or the extent of their injuries.
Lines of fire engines, ambulances and law enforcement vehicles from multiple agencies were at the school and medical helicopters landed on a grassy field.
The shooting happened at the school in Highlands Ranch, which has more than than 1,850 students from reception age to 17.
The sheriff's office said they were called to the school at about 1.50pm.
Ms Nicholson-Kluth said police and deputies got there almost immediately and heard shots as they arrived.
The school is near a sheriff's department substation.
The sheriff's office directed parents to a nearby recreational center to pick up their children.