As many as 20 people were injured in a shooting at Annunciation Catholic School in south Minneapolis Wednesday morning, according to two federal law enforcement sources.

Sources tell CBS News that the shooter died of an apparent self-inflicted gunshot wound.

The shooting triggered a massive law enforcement response at 54th Street between Harriet and Garfield avenues. Minneapolis police said there is no active threat to the public.

Authorities say there will be a news conference at 10:30 a.m.

Officials to update on south Minneapolis shooting

What : City, public safety officials release information on active police presence at Church of the Annunciation

When: 10:30 a.m.

How to watch: You can watch live in the player above, on CBS News Minnesota or on YouTube.

Federal sources say t

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