Two people tried to rob a shop on Triq il-Wied, Hamrun, the police said in a statement.
The incident occurred at 10pm on Saturday evening.
A police statement read that one of the workers at the shop, a 38-year-old from Pakistan, saw a man try to open the cash register through CCTV, while another worker, a 46-year-old Filipino, was being distracted by a woman who was requesting items on high shelves.
The 38-year-old employee came out to stop the thief. The culprit threatened the worker, saying he had a knife.
Another worker, a 25-year-old Moroccan joined the other employee, who explained to him what was happening. The woman and the man then quickly fled the scene.
Police investigations are ongoing.