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Seeking wealthy man who enjoys having fun, must love getting robbed.

An 80-year-old woman in Poland drugged and stole from a string of suitors she met through dating ads in her local newspaper -- a crime that could put her behind bars for 20 years, investigators told AFP on Tuesday.

Prosecutors claim the suspect, identified as Janina M., would sneak the powerful sedative lorazepam into her victims' food, lulling them to sleep during what they thought was a romantic meal.

In one particular case, the woman was accused of snatching $2,000 in cash, jewelry and electronics from a 78-year-old man who'd invited her to his home in Szczurow, east of Krakow.

"I'd never have imagined this lady was capable of doing something like this, nor that she's 80," prosecutor Andrzej Lesniak said.

The 80-year-old denied she did anything wrong. Still, court records showed she'd been convicted of theft and fraud eight previous times.

Lorazepam is commonly used to treat anxiety, but scientists warn it can be deadly when combined with alcohol or other drugs.