DUNWOODY, Ga. -- Dunwoody police investigators hope surveillance video will lead them to a pair of armed robbers.

Two men held up the Burger King restaurant on Chamblee Dunwoody Road just before the manager locked the doors Monday night.

Police said the case will be hard to solve because the men were wearing ski masks.

Two men armed with guns walked inside the Burger King just when it was about to close.

“They grabbed the manager, walked him through the restaurant and demanded money,” said Detective Kelly Gobley of the Dunwoody Police Department.

Police said they do not know how much money was stolen.

Detectives said surveillance cameras recorded the gunmen in action. Based on the video, the thieves wasted no time robbing the restaurant.

“They were in and out in two minutes. It was very quick,” said Gobley.

Both men were dressed in all black and were wearing ski masks.

The robbers left the restaurant through a back door.