A long-time customer of the bank was inside and happened to be armed because he spent six years in the Lebanese army and decided to take matters into his own hands.
"I told him 'You're not going to rob this bank; you're not going to rob this bank today,'" said Nabil Fawzi.
The man held him at gunpoint until police arrived and is now being praised for his quick thinking.
No one was injured during the incident, and no bomb was found.