Some traces of her blood were found in the basement, the rear garden and on the canvas sack used to store Rivett's body; this may have been due to contamination at the scene. The man Lucan claimed to have seen could not have left through the basement's front door as it was locked, and the rear door led to a walled garden through which no trace of an escape was found. No signs that the man left by the ground level front door were discovered, and no witnesses reported seeing any such person near 46 Lower Belgrave Street.