The situation became more urgent when investigators learned he had recent mental break downs and did in the return the son. We always take those serious. But you can understand that is not the same scenario when you have some concerns for the safety of the child. That is what happened today. As we continued the investigation we realized that this is one of those that we need an amber alert. Reporter this is a picture of jason lam and little makai believed to be taken at a supermarket in menlo park yesterday. Investigators are there looking for leads. But again considering he may be heading towards southern california. Jason lam is 53, 145 pounds, now the license plate on the car that he was believed to be driving is 5 sey 238. Again if you see him the car or the child youre asked to call 911. Reporting live in San Francisco kristi smith, nbc. Thank you. Lets look another look at the father and boy. If you see them at all youre rjd to call 911, not to intervene. Of course well continue