In Episode 1, when Darth Maul and Obi-Wan Kenobi are fighting, Obi-Wan cuts off one blade of Maul's double-bladed lightsaber, and it looks like smoke or fire starts in the corner behind Darth Maul. What's the explanation of this?
As a kid I thought that it was the cut-off lightsaber that landed behind Maul and damaged the wall/ground. But I am not sure since Obi-Wan destroyed the blade by cutting its hilt, or am I getting something wrong?