into the water supply. i had a cannes to talk to the plant manager who said the cleanup crews have arrived at the plant. once that is done, there will be more answers about what happened here today. but the cleanup could take days. >> >> new at 10:00. swastikas and slashed tires, what is left behind after vandals struck 50 cars in santa cruz. eric is standing by live to show us the damage. >> >> reporter: 24 is 1 of the streets where we found car after car, including that 1 there with slashed tires and angry owners. a rash of vandalisms so large -- >> i had 2 flat tires on with your car and another flat tire on another. >> reporter: dozens of crews suddenly had something in common overnight. >> i was pretty stunned. i don't know why anybody would