A 43-year-old woman was arrested Friday for attempting to poison her sister and her sister's boyfriend with sandwiches laced with poison, police say.

The woman's live-in sister called police and said she had found rat poison in her sandwich and in her boyfriend's sandwich. She said it wasn't the first time she found poison pellets in a sandwich, either.

Dana Simons had brought home chicken sandwiches for the couple earlier that week, but the couple tossed them in the trash without touching them because they had funny-looking bluish-green pellets in them.

The next day, Simons brought the couple home sandwiches again. Simons' sister says what the pellets were made of dawned on them.

"They saw the blue-green pellets again and made the connection to the container of rat poison they found in the house," Ocean County Assistant Prosecutor Martin Anton told the Asbury Park Press.

Anton said there had been tension in the house since Simons' sister moved into the house with her boyfriend after their mother died two years ago.

"There were some disagreements smoldering over a period of time," Anton said.

Until recently, Simons worked at a nearby deli. She could get five to 10 years in prison for each attempted murder charge if she's convicted.