Unknown assailants threw Molotov cocktails at the bus No. 8343 , which works on the line Moneeb - Imbaba , before reaching several meters only to a bus stop Moneeb near the metro station , after he asked the passengers to disembark from the bus , causing burning of the back half of the bus , and included damage burn The engine gets damaged . Civil Protection and managed to control the fire , to burn before the bus completely , and found Molotov cocktails found the bottom of a front seat .