Two police officers were shot dead in Iowa early Wednesday in what police have described as ambush-style attacks, dpa reported. The shootings both occurred in the state capital, Des Moines, broadcaster KCCI reported citing police. Police responding to reports of gunfire in the early hours of the morning found one wounded officer, who died of his injuries, the Des Moines Register reported. Shortly after the first discovery, another colleague was found dead. Further details were not immediately available.