reports that Sgt. Paul Parizek said an unknown number of suspects have been detained and three teens are in critical condition.Des Moines Public Schools were given the "all clear" by police after putting the high school on lockdown earlier on Monday, according to a tweet, and students will be dismissed "on time." Special agents from the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) Des Moines field office have been deployed to the scene to assist with investigations, the agency tweeted.
FOX Television Stations has reached out to the Des Moines school district for comment. AdvertisementThis story is developing.