Toyon Park is a quiet spot in Anaheim Hills popular with families. What happened at the park a week ago has some people on edge.
"My first reaction -- it was disgust," said "Martha," a victim who did not want to be identified.
Martha was working out in the park with several other women before 6 a.m. when she returned to her car. A photo was left on her windshield.
"First I kind of looked around and I told the lady that was parked next to me that 'Somebody just put some pornography on my car,' and all of a sudden I see four other ladies step away from their cars," said Martha.
"We found photographs of male genitalia, several different shots of this person," said "Jill," another victim who did not want to be identified.
Jill is among several who say they found similar photos on their cars. She reported the incident to police.
"Our detectives are working on this case. It is an active investigation. We're trying to see if there's anything on those photographs that will assist us in identifying who this person or group of people may be," said Anaheim Police Sgt. Rick Martinez.
Jill says her friend also found similar photos on the nearby running trails weeks before. E-mails and warnings began circulating in the community.
"It definitely raised the level of concern that this person was no longer doing what he was doing on the trails but now in a more public setting," said Jill.
The photos were placed on the windshields some time during the women's 45-minute workout.
"We figured that weirdo is probably watching us," said Martha.
"There is a possibility that things could escalate. We are asking people to be vigilant," said Martinez.
"We're just all a little more careful. You don't do those things solo, you always do it with a group," said Jill.
If you have seen similar photos or have information related to this case, you're asked to call Anaheim Police at (714) 765-1960.