"The building was locked, so the crews had to use power saws to force their way in," LAFD spokesman Capt. Erik Scott said.  
	
		 The fire prompted a "Mayday" call, and more then 230 firefighters responded to the scene
 The fire prompted a "Mayday" call, and more then 230 firefighters responded to the scene  
	
	
		The blaze may have started at Smoke Tokes Wholesale Distributor -- "reportedly a supplier for those who make butane honey oil," LAFD said.
	
		Some firefighters entered on the ground while others climbed up on a ladder to try to ventilate the roof, Scott said. But firefighters started to hear a rumbling, high-pitched sound, and a call was made for everyone to get out.