Investigators on Thursday were working to find more clues after a shooter opened fire at Annunciation Catholic Church in Minneapolis during a Mass attended by young students, killing two children and wounding more than a dozen other people. The shooter died by suicide at the church, which is attached to a school building.

Seventeen other children and adults were injured in Wednesday's shooting, which occurred during a Mass marking the beginning of the school year.

Here's what we know about the shooting.

What happened at Annunciation Catholic Church?

Minneapolis Police Chief Brian O'Hara said law enforcement responded to the shooting around 8:30 a.m. Wednesday morning. O'Hara said the shooter fired a rifle through church windows and was also armed with a shotgun and a pistol. The s

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