Around 1am Engine Co. 33 responded second due to the 4000 block of Warner Avenue for a Street Alarm. First arriving units found a haze in the bottom floor of the apartment building and Engine 332 was tasked with giving a report of the terrace level apartments that are only accessible from Side Charlie. The crew forced a door and found smoke conditions with several set fires inside a vacant apartment.  The Lineman stretched the redline and extinguished the same and the scene was turned over to Fire Investigators.