SAN FRANCISCO - The man accused of stabbing a father who was walking with his eight-year-old son pleaded not guilty on Friday to murder and child endangerment charges.

Judge Harry Dorfman ordered Daniel Patrick Rodriguez Jr. to be detained as he awaits further hearings.

Rodriguez is charged with murder and child endangerment after allegedly stabbing Robert Byrd II in the neck on Sept. 10, while Byrd was walking with his son.

A deadly altercation

The backstory:

Byrd, 35, had just picked up his son from Commodore Sloat Elementary School on Wednesday afternoon and the two were crossing the street when he got into an altercation with another man, later identified as Rodriguez, 42.

Court documents ordering Rodriguez' detainment state that witnesses saw the two men "pushing and punching"

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