Investigators are looking into what caused the fire that tore through the home of former U.S. Rep. Alan Grayson.Neighbors said the former congressman only recently moved back into the house on Oak Park Drive in Orlando. If you look through the front door of the home, you can see walls collapsed from the flames, while the roof was incinerated. It’s very sad. And I don’t know what happened, Lolita Grayson said.Lolita Grayson is Alan Grayson’s ex-wife. She used to live in the home on Oak Park Drive and came back on Tuesday. She was emotional after seeing it destroyed. Shocking to me. That s the house that I lived with my family. Raised my children over there, Lolita Grayson said.Dozens of Orange County fire crews battled the flames, tearing through the 7,000 square foot home.Alan Grayson, a controversial and outspoken Democrat who served in Congress until 2017, did not respond to messages but his current wife, Dr. Dena Grayson tweeted Tuesday morning, saying: Our family h