WINSLOW — Gary Worden Jr. stood and watched his mobile home on Old Eames Road burn to the ground.

“This is — I don’t even know what to say — this is unbelievable,” he said.

Worden, 44, and his roommate, Rob McMann, 36, lost everything in the fire, which broke out Thursday afternoon when neither was home. The fire was reported at 12:22 p.m..

About 20 firefighters from five towns battled the blaze, which had destroyed the home before they even arrived, according to Winslow Fire Captain Kevin Fredette.

“The people who were here first said the fire was concentrated in the center of the building and from that and the burn patterns, we’ll start looking there,” Fredette said at the scene.

Later in the afternoon, he said he did not think officials would be able to find out why the fire started.

“Damage was too extensive to determine a cause,” he said.

Worden said he did not know how the fire started.

“I took off to do some shopping,” he said. “Somebody found me. People usually know where I am. I’ve lived here eight years. Everything’s gone — all my pictures, everything. We’re sitting here wondering how we’re going to rebuild this place. It’s kind of hard to do that right now.”