FORT LAUDERDALE (CBSMiami) – Fort Lauderdale police are searching for a couple of bold robbers who tried to rip off a fast food restaurant while it was filled with customers.

It was a terrifying moment for 13 people inside a McDonald’s restaurant located on State Road 7 just north of I-595.

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Two armed robbers, one with an assault style rifle, burst in looking for money around 10:30 p.m. Sunday.

“Two masked, disguised suspects, who were also armed, walked into the business, they ordered all of the customers to put their hands on the tables and not to move, they then went to each employee and asked them not only to escort them to the safe, but to open the registers,” explained Fort Lauderdale Police Department spokeswoman Deanna Greenlaw.

When the crooks ran in the door, the McDonalds manager ran out another door.  From a distance, he called police.

Back at the restaurant, with no manager inside, the crooks were not able to get any money. They just snatched a cell phone from a table.

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“Essentially what you have, all of these lives put in danger by these two individuals and all they left there with was a cell phone,” said Greenlaw.

What has detectives very concerned about these guys is that even though the restaurant had a good number of people inside, the gunmen didn’t care.

“These two individuals went inside that restaurant seeing all the activity inside, seeing all the customers and all these possible witnesses to what they were about to do and they were still brazen enough to follow through with the reason why they were there,” said Greenlaw.

The suspects were driving at 2-door, Red Pontiac G6 with dark tinted windows.

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If you know anything about this crime or the getaway vehicle, call Broward Crime Stoppers at (954) 493-TIPS.