Shooting outside Iowa high school leaves one dead and two critically hurt

Two suspects held as police say gunfire on grounds of East high school in Des Moines appeared to come from passing vehicle

One person was killed and two others were critically wounded in a shooting outside an Iowa school, authorities said Monday.

Des Moines police said in a news release that gunfire that struck the victims on the grounds of East High School, near Des Moines' downtown, appeared to come from a passing vehicle. Potential suspects have been detained but no charges were immediately filed.

Sgt Paul Parizek told KCCI-TV that calls started coming in around 2.50pm, shortly before classes were scheduled to finish for the day. The district said in a series of tweets that the school was initially locked down but later it announced that students were being allowed to go home.