>> reporter: it all began with a traffic stop this morning of a motorcycle near monterey and john wilson ray. hay quickly realized he had a warrant for his arrest. the search turned up a gun and this mystery substance. streets were quickly blocked off and students at oak wood school were told the shelter in place. they say they had to take every precaution. >> the community at large could be in danger from a small amount. we went into the protocol measures. >> reporter: the bomb squad was able to test and identify the welders putty pretty quickly. the roads have now been reopened, tori. >> all right. thank you. >>> police at san francisco state looking for a man who sexually assaulted a woman early this morning. police say a man grabbed her just before 1:00 this morning. the man threatened her with a sharp object and groped her before running awyoming she described as a man in his 20s wearing a gray hoodie and blue jeans. >>> after a long dry spell there is finally some rain ton way. mark is live here with what will be felt. >> yeah. the north bay will be picking up the rain. we are tracking