According to eyewitnesses gunfire can be heard in the vicinity of the palace late on Saturday night.
Saudi Arabia's King Salman has reportedly been evacuated from the compound to a bunker at an air force base in Riyadh.
The number of assailants, their identity or affiliation has still not been identified.
Some sources claim that the attack is part of a coup led by Saudi royals who are opposed to king Salman, while other reports indicate that the shooting occurred when the palace guards targeted a small drone which came too close to Salman's residence.
Following the footage's circulation, a senior Saudi official claimed that the incident occurred when troops opened fire at a toy drone in Khozama district, where royal palaces are located.
A statement was also released via state news which said that troops had spotted a drone and "dealt with it according to their orders."
Security around Saudi royal palaces has been bolstered over the past few months as Crown Prince Mohammed bin Salman oversees Riyadh’s economic overhaul, dubbed Vision 2030.
According to the Saudi Interior Ministry, last October an attacker killed two Saudi guards and injured three others at the gate of the royal palace in the Red Sea city of Jeddah.
No official sources have yet shown reaction to the accident.
