Residents stick together and carry plastic lighted candles at a vigil for the victims of the shooting at the Thousand Oaks Civic Arts Plaza in Thousand Oaks, California, US, Nov. 8, 2018. /VCG Photo

Hundreds of mourners gather at the 45-minute vigil, less than 24 hours after 12 people were pronounced dead in the mass shooting. /VCG Photo

The tragedy occurred in a local bar named Borderline Bar & Grill during a “college night” and caused the death of 12 people, including the gunman. /VCG Photo

US President Donald Trump addressed the shooting on Twitter and ordered national flags at half-staff on Thursday. /VCG Photo