SANTA CRUZ -- Flowers, pictures and American flags have been stolen from at least 500 grave sites at the Oakwood Memorial Park cemetery.

The items were taken some time between 7:30 p.m. Friday and 7 a.m. Saturday in the northeast corner of the cemetery at 3301 Paul Sweet Road, Santa Cruz County sheriff's Sgt. Patrick Dimick said. Ceramic figurines, picture frames, vases and solar-powered lights also were taken, as well as teddy bears at children's grave sites.

No one has been arrested.

Susann Rogberg of Corralitos said someone stole a 10-pound angel statue, flowers, lights and a framed picture from the grave site of her granddaughter, who died on the day she was born in 2011.

"It's upsetting," Rogberg said, fighting back tears. "They just took everything."

Another victim, Cathy Herteman, said items were taken from the grave sites of her parents.

"It's just a senseless, heartless thing," Herteman said.

Victims said the individual items were of little monetary value, yet an entire section of the cemetery was swept in the heist. Dimick estimated about $1,000 worth of items was stolen.

"This is just over-the-top," Herteman said.

A woman who noticed the thefts replaced dozens of American flags at the grave sites of military veterans in the past few days, Herteman said.

Two victims said they believed more than one person and a vehicle were involved in the heist because so many items were stolen. Deputies said they were unsure if a vehicle was used or how many suspects were involved.

Randy Krassow, owner of Santa Cruz Memorial, which operates the cemetery, was not available for comment Monday. But Rodberg said cemetery leaders told her family that they would look into new lights near the cemetery to deter crime.

Dimick said there were no security cameras in the area. He was unsure of the motive.

"It would upset me if I were a family member, without a doubt," Dimick said of the thefts.The Sheriff's Office asks anyone with information to call dispatch at 831-471-1121.