From the AP:
The chief said he called Los Angeles police, which sent a patrol car to Ciancia's apartment. There, two roommates said they had seen him Thursday and that he was fine.
Cummings said he told Ciancia's father that because of the son's age, he couldn't take a missing persons report. He said Ciancia's father owns an auto body shop. He says they are a "good family" and that his department had no dealings with the younger Paul Ciancia.
Multiple media outlets on Friday named Ciancia, 23, as the suspect in the shooting, although authorities had not officially identified him. A TSA officer was killed, and at least three other people were wounded in Friday's shooting, and Ciancia was reportedly taken into custody after being wounded in a shootout with police.
TPM's attempts to reach the Ciancia family were unsuccessful.