Story highlights Broward County authorities have asked for help nabbing a ring of female thieves

The 'foxy thieves' are accused of targeting men they pick up at high-end bars

They are accused of slipping drugs into their victims' drinks

Then, police say, they leave with the victims' valuables

South Florida authorities are asking for the public's help to find a group of "foxy thieves" they say are drugging men they pick up at high-end bars and stealing tens of thousands of dollars in cash, jewelry, guns and other valuables.

Investigators suspect there may be more women involved in the ring.

"They're attractive women that go into a bar and they have a scam and they work it again and again," said Dani Moschella, a spokeswoman for the sheriff's office.

The scam works like this: go to an upscale bar, flirt with a middle-age or older man wearing expensive jewelry, go back to his home, slip a drug in his drink, rob him and leave before he wakes up.

This is what Subhanna Beyah, 25, Johnnina Miller, 25, Keshia Clark, 27 and Ryan Elkins, 23, have allegedly been doing for the past few months in upscale bars in South Florida.

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Hours after authorities released images of the suspects to the news media on Thursday, Clark turned herself in to Miami-Dade police, the Broward County Sheriff's Office said Friday.

Investigators have identified four of the women's victims, Moschella said, adding that they believe other victims "haven't come forward because they're embarrassed."

"This investigation is by no means over," she added. "We anticipate identifying other suspects and other victims."

Scott Rosen, 54, told CNN two of the suspects paired up when they worked the scam on him. Rosen said met the two women at YOLO, a popular bar in Fort Lauderdale's business district, and the three left the bar for his house. There, Rosen said, one of the women distracted him while the other made him a drink.

"I got drugged," Rosen said.

The next thing Rosen remembers is waking up to discover over $250,000 worth of his personal items gone -- handguns, diamonds and a Rolex watch he was wearing -- along with the women.

"It could have been worse," he noted. "They could have shot me with my own handgun."

The women, who allegedly used fake names during their ruses, are each being charged with one count of grand theft. Broward County authorities are eager to get these women in custody. The sheriff's office has joined with Crime Stoppers to offer a $1,000 reward for anonymous tips that lead to an arrest.

"We really want to get these women off the street ... because they're drugging their victims, presumably," Moschella said. "We don't know how long it will be before they end up killing somebody accidentally."