At least 200 tacks were found strewn throughout a dog park in Hercules over the weekend, according to police.
A Hercules police officer responded to Ohlone Dog Park at 190 Turquoise Drive around noon Saturday based on reports of visitors to the park finding tacks that day and on Friday.
Tacks were found inside the park as well as in a creek nearby, according to police. The tacks have apparently been reported at the park on at least one other occasion.
There was no information available on potential suspects or witnesses.
Anyone who may have information about the case is asked to call Hercules police at (510) 799-8260.