“Hannah will come back and Ethan and Tina, I love you both,” Anderson told the crowd. “We all love you. I know everybody’s here for support of all three of them and I want to thank you all. God bless.”
Hannah, a missing 16-year-old girl, is believed to have been kidnapped by a longtime family friend who reportedly shot dead her mother, Christina, and her 8-year-old brother, Ethan, according to San Diego County Sheriff officials.
James Lee DiMaggio is suspected of killing Christina, 44, and of kidnapping one or both of her children.
At the vigil held at El Capital High School in Lakeside, Calif. attendees gathered wearing pink -- Hannah's favorite color -- and released blue balloons into the sky in honor of her younger brother, Ethan.
“We have hope still that she’s still out there. And we hope that she somehow hears about this and knows that we’re all here for her and praying for her,” Hannah's friend Haley Wilcock told Fox 5 San Diego.
At a Tuesday afternoon news conference, Brett Anderson pleaded for his daughter back.
“I’m begging you to let my daughter go," he said. "You’ve taken everything else.”
DiMaggio, 44, is believed to be driving a blue Nissan Versa, California license plate 6WCU986. A state-wide Amber Alert was issued Monday and still remains in effect.
DiMaggio was reportedly a close family friend whom the children thought of as an uncle. Authorities have not yet released his motive.
“We think she’s in grave danger,” Lt. Glenn Giannantonio told Fox 5 San Diego.
Celebrity Families of 2014 [PHOTOS]