After a weekend of intense investigation, authorities are piecing together more details about Friday's fatal shooting at Los Angeles International Airport, including the suspect's behavior earlier in the week and a warning from his family that may have come minutes too late.
Ciancia, 23, of Los Angeles, is charged with murder of a federal officer and commission of violence in an international airport.
He was shot by officers Friday and was in critical condition at Ronald Reagan UCLA Medical Center on Sunday.
Although Ciancia has no known history of mental illness, he said in the texts that he was unhappy, and the messages were alarming enough that Ciancia's father decided to call police.
Allen Cummings, Police Chief in Pennsville Township, New Jersey, weighed in on the messages saying, "It was enough to make myself and Mr. Ciancia,the father,feel that his younger son is contemplating harming himself... When I saw that text message I knew we needed to make a phone call and get his son checked out and make sure he was OK in California."
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According to someone who knew Ciancia and his three roommates well, Ciancia began asking for a ride to the airport days before the shooting. He claimed he needed to fly to New Jersey to help his sick father, but he never said what day he needed to leave, the source said.
On Friday, Ciancia burst into a roommate's room and demanded a ride to the airport immediately, said the source, who spoke to CNN on the condition of anonymity.
The roommate obliged. Investigators don't think the roommate had any idea of Ciancia's plans.