Complex sentence: As news spread that Freddie had not be rescued from the fire, residents believed the worse, however on May 21 when Ashley returned to the Street and spoke to investigators, it was revealed that Freddie had not been in the house when the fire began.
Split into simpler sentences: As news spread that Freddie had not be rescued from the fire, residents believed the worse. It wasn't until Ashley returned on May 21 to the Street and spoke to investigators, that they informed the couple that Freddie had not been in the house when the fire began.