Please improve the consistency in the given text
Around 11: 00, the intensity of the shooting from the opposition side subsided and the soldiers believed the rebels were retreating. An improvised explosive device detonated with a low noise about 10 meters from them.
Around 11: 00, the intensity of the shooting from the opposition side subsided and the soldiers believed the rebels were retreating. Then, an improvised explosive device detonated with a low noise about 10 meters from them.