The Flash Briefing is a daily news update every weekday morning from Todd Jeffries. 

• Three people and two suspects are dead after a shooting at a mosque in San Diego yesterday morning 
• The owner of Central Texas Gun Works, Michael Cargill, told reporters the gun used in the weekend shooting spree involving three teens in south Austin was stolen from his store 
• A new Texas Senate poll shows both Republican candidates John Cornyn and Ken Paxton are deadlocked against Democrat candidate James Talarico

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