SIOUX FALLS, S.D. (KELO) -- One hundred sixteen rounds, that's how many shots were fired at Annunciation Church in Minneapolis. The FBI is investigating it as an act of domestic terrorism and a hate crime targeting Catholics.

Two children were killed and more than a dozen others were hurt when a shooter opened fire during morning mass. We asked U.S. Senator Mike Rounds what can be done to stop violence like this.

"I think if we had the answer to it, you know, we'd be doing it already. It's not an easy topic to address," said Rounds.

Story continues below • Top Story: 2 dead after aircraft crash near Kearney, county sheriff reports • Lights & Sirens: Sioux City man found guilty of murdering his girlfriend • Sports: Explorers clinch West Division regular season title with 9-4 win ag

See Full Page