© Joel Goodman - 07973 332324 - all rights reserved . 29/06/2012. Oldham , UK . Assistant Chief Constable of Greater Manchester Police , Steve Heywood , updates the media on GMP's investigation . A large explosion , believed to be caused by gas , has brought down at least one house in an Oldham terrace. Police and search and recovery fire teams are searching the scene . . Photo credit : Joel Goodman