What actions do you take after your dog has bitten a person?

so my cousin just called me up to tell me her 3-year old boston terrier bit someone at a restaurant. the dog wasn’t with her, he was with my cousin’s mom and dad. i’m not quite sure why he bit this lady yet, and i’m still waiting on a call as to what happened, but what actions do you take now that this has happened? this dog has no violent history and hasn’t ever bit a person. the police said something about how the aspca is going to come over my cousin’s home to quarantine and check out the living environment I guess.