ST. PAUL-- Public records show that the suburban St. Paul officer who fatally shot a black man during a traffic stop is a married father known for volunteering with his police department.

Investigators say St. Anthony Police Officer Jeronimo Yanez opened fire during a traffic stop Wednesday at Philando Castile, whose girlfriend live-streamed the shooting's immediate aftermath on Facebook.

Police have released few details about Yanez, a four-year veteran of the St. Anthony Police Department.

Public records show the 28-year-old has a wife and child, and graduated from Minnesota State University Mankato with a degree in law enforcement in 2010.

Yanez lives in a two-story frame house on a cul-de-sac just north of St. Paul, where children were playing outside Friday. Neighbors declined to talk about Yanez or the case.

The department's 2015 annual report notes he gave Cub Scouts a tour of the station and volunteered with St. Paul's Cinco De Mayo celebration. A year earlier, a photograph showed him standing guard at a fallen-officers memorial.

Yanez's attorney hasn't returned several messages.