The two fatalities in the three attacks are 39-year-old Anthony Stephan House and 17-year-old Draylen Mason, whose mother was critically injured.
75-year-old Esperanza Herrera was injured by the third package.
Draylen Mason, 17, brilliant musician, was "like the light in a Rembrandt painting" his former music director said. Mason died 10 days after Anthony Stephan House was killed in another Austin bombing. Hunt the killer or killers down. Find them. Somebody knows. #AustinBombingspic.twitter.com/4BPJvviOAS