SAN FRANCISCO (KCBS) – With no arrest yet for the rat poisoned meatballs left on sidewalks in the Upper Market area, San Francisco officials said Wednesday they are still concerned that not all of the meatballs have been located.

More than 50 meatballs laced with rat poison have been found in the Twin Peaks and Diamond Heights neighborhoods around Crestline Drive and Burnett Avenue since a dog named Oscar was hospitalized after eating one of them more than a week ago.

“You’ve got to be very cognizant of what your dog has in her mouth,” said Inspector Joseph Nannery with the San Francisco Police Department.

“I can’t say with certainty that all of the meatballs have been found because I don’t think that they have been.”

Nannery said investigators have followed up on dozens tips submitted to police and to the city’s Animal Care and Control Department. Meanwhile, residents have been scouring the dense brush and grass in the hills of San Francisco to try and recover more of the toxic meat.

Police believe the poisonous meatballs were intentionally placed where dogs defecate. Nannery said investigators want to talk to anyone who’s aware of conflicts involving dogs in the neighborhood or any incident where someone has shown antagonism toward animals.

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