A convenience store in New Orleans made national news last week after an employee slapped a Denver parking boot onto a working ambulance that had parked at the store while its EMTs were inside the vehicle tending to a man with chest pains.

The ambulance, owned by New Orleans EMS, had been called to the convenience store to respond to a man with “a life-threatening issue,” according to a report on CBS affiliate WWL-TV.

The paramedics kept the flashing lights on while they were inside and didn't notice the boot until they drove away, causing a loud clanking sound. When store employees removed the boot, it left the ambulance's tire flat, forcing a delay in the patient's care while a second ambulance responded to the scene.

WWL-TV reported that the man who placed the boot, Ahmed Sidi Aleywa, was cited by police and fired by the store. “The guy that did this, he came from another country. He didn't even know what an ambulance looked like. He's been fired,” store employee Ali Colone told the news site.