Multiple victims in shooting outside high school in U.S. Iowa

There are multiple victims after a shooting outside a high school in Des Moines, the capital city of midwestern U.S. state of Iowa, police said on Monday afternoon.

Emergency crew are on the scene at East High School in Des Moines, the local police department tweeted.

The school was temporarily on lockdown but has been given the all-clear, Des Moines Public Schools said in a statement.

"Police are actively investigating," the statement read. "Students are dismissing on time."