Ellen Goldberg, NBCDFW.com
Wednesday's robbery of a Dallas bar is similar one of a restaurant last month.
Dallas police are investigating the possibility that a robbery at a Dallas restaurant last month is related to a hold up of a Henderson Avenue bar.
On Dec. 23, robbers hit a kitchen manager over the head outside the Humperdink's on Greenville Avenue and then locked him in a storage shed, police said. Once inside, the robbers emptied the safe and the pockets of six employees who were working late.
Early Wednesday morning, three men with guns barged in the back door at the Old Monk while an employee was shaking out a bar mat. The robbers, one of whom wore a mask, stole the money from the safe and then locked the seven employees in a walk-in freezer.
Investigators said the similarities between the incidents are striking, but would only say it's possible that they related.
People who visit and work at Dallas restaurants are on edge after the robbery reports.
"I really feel bad for the people that had to experience that," said Jeremy Roop, a waiter at the Porch, across the street from the Old Monk.
Roop said his managers sent out a warning to all employees of the Porch about the recent robberies.
"I am here late, and I do close," he said. "I'm definitely going to walk out in pairs now."
Dallas police said they have stepped up patrols in the Knox-Henderson area in light of Wednesday's robbery.