She was in the vehicle when Castile was shot, and could later be heard on the live stream, trying to comfort her mother. His fiance, Diamond Reynolds, live streamed the immediate aftermath on Facebook.
"It hurts me what's going on in Dallas", Diamond Reynolds, the girlfriend of Philando Castile, tearfully told ABC News.
The St. Anthony Police Department's 2015 annual report points to Yanez's volunteerism; he gave a tour of the station to a local Cub Scout troop and volunteered with St. Paul's Cinco De Mayo celebration, participating in a parade with other members of the National Latino Police Officers Association. "As this is an ongoing investigation we are not able to comment further at this time", he said. Choi has spoken out about the video, however, saying that "what is depicted in the video, it just makes you sad to watch all of that unfold".
The Democratic governor also said he stands by his statements Thursday that police likely wouldn't have opened fire had Castile been white.
Protests over the fatal shooting of Philando Castile by a suburban police officer stretched into Friday morning near the Minnesota governor's residence, as new details about the encounter emerged and many continued calling for a federal inquiry.
The gathering Thursday evening was the second time a crowd grew outside the governor's residence in the wake of the fatal shooting of Philando Castile by a police officer in suburban Falcon Heights. He graduated from the Minnesota State University in 2010, and was sworn into the St. Anthony police department in 2011.
Minnesota's Bureau of Criminal Apprehension (BCA) named the two officers involved in Castile's death as Officer Jeronimo Yanez and Officer Joseph Kauser.
The department, however, is taking another approach on the case of Alton Sterling, a black man who was fatally shot by police in the southern state of Louisiana. Yanez has been placed on administrative leave.
The previous year's report includes a photo of Yanez solemnly standing guard at a memorial to fallen officers at the state Capitol. Several videos, including squad auto video of the incident, have been collected.
Yanez's attorney Thomas Kelly declined to comment on Friday. But he also said he was of the understanding that Justice Department officials were already closely monitoring the case and would be readily available to BCA investigators.
"I intend to follow the law", Dayton said, "and that's what I ask our citizens to do".
"We're starkly reminded by what happened in Dallas how law enforcement men and women risk their lives day and night to keep us safe", Dayton said.
Reynolds said police dropped her off at her home at 5 a.m. Thursday.
St. Paul Police emphasized that this was a small group of people and that the majority of those protesting were calm and peaceful. "I want to see justice served".