A praying sejadah in a mosque

This event happened in a mosque one night in Oman...South of Muscat...the villagers heard the sound of a man reciting verses from the Qur'an and went into the msque to investigate..only to find no one around..upon thorough investigation, they found a 'sejadah'/ prayer carpet in a kneeling position, as if praying...facing the kiblat...subhanallah...