A customer at a cafe in Alabama refused to pay, leading to an exchange of gunfire with an officer Friday morning, police said.

The officer was shot once or twice after confronting the customer outside Ruth’s Cafe in Birmingham, Police Chief Patrick Smith told a news conference.

The customer had left the cafe after refusing to pay and got into a vehicle, the chief said. Smith said the officer approached the vehicle to have a conversation with the customer and was met with gunfire.

The officer was taken to UAB Hospital in good condition, Smith said. The customer was also hit and taken to the hospital in critical condition.

The identities of the officer and the customer were not immediately released.