then took off on a stolen yacht. this all started off 3:00 yesterday afternoon. nbc bay area s bob redell is live in south san francisco with all the latest. good morning. reporter: yes. here in san francisco where this abduction started earlier this week. good morning to you, jon. coast guard station san francisco tells us they have located this sailboat, that they have a c-130 flying circles over it, trying to keep an eye on it until a cutter can arrive. one is on the way from treasure island as we speak to that boat s location, which is still about 50 miles off the shore between santa cruz and monterey. south san francisco police believe that christopher maffei and his two young children, age 2s and 3, are on board. he abducted them tuesday from their mother s home in stran and he took them out to sea on a 40-foot sailboat he stole from a harbor in alameda. the coast guard was able to locate them this morning after a tip came in around 4:00 this morning from a commercial