Fire crews are at a junkyard in Southwest Philadelphia where twenty cars caught on fire.SOUTHWEST PHILADELPHIA (WPVI) -- Fire crews are at a junkyard in Southwest Philadelphia where twenty cars caught on fire.The fire started before 4 a.m. Monday on the 6600 block of Essington Avenue.[Ads /]The cars were found in the rear of the junkyard.PICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVIPICTURES: 20 cars erupt in flames at junkyard in Southwest PhiladelphiaWPVISo far, no reports of any injuries.No word yet on what caused the fire.