"There are similarities between these two crimes captured on surveillance," Dustin Sternbeck of Arlington County Police says. "Caroline is a suspect in both incidents."
Until police confirm a connection between the two crimes, people working near the stores say they'll be on high alert.
"I feel better, but I'm still scared," a server at the Thai Square restaurant next to Capital Jewelers says.
Wong's family in Herndon is coming to grips with losing the most important person in their lives.
"We're still sad about the loss of my dad, but now we can mourn him, without worrying about whether they catch the person who killed him or not," Vivian Wong says.
"It's such a shame such a good man had to go this way," Desmond Wong says about his father. "He was a great dad and a great husband to my mom. He was perfect."
Ken Stein, who owns Bensons Jewelers, says he's seen Caroline's mugshot, but can't say with certainty that he's the man who robbed him. He wants to see some enhanced surveillance videotape and to talk with police first.