An off-duty firefighter slapped a McDonald's drive-through employee before bursting into the restaurant and shooting him following a row over a discount coupon, it has been alleged.
A man identified as Sergeant Paulo Cesar de Souza Albuquerque was filmed speaking to McDonald's employee Mateus Domingues Carvalho, 21, through the drive-through window on May 9.
In the clip Albuquerque is seen opening his Mercedes door, putting his arm through the window and hitting Mr Carvalho, who immediately jabs back.
