SYDNEY (Reuters) - An Australian court on Monday ordered bail revoked for the partner of a self-styled Sheikh who last week stormed a Sydney cafe at gunpoint, sparking a 16-hour hostage crisis that left three people dead, including the gunman.

Amirah Droudis, on bail after being charged with the murder of hostage-taker Man Haron Monis' wife, was ordered by a Sydney court returned to jail to await trial.

Monis, who had been charged as an accessory to the murder, had also been free on bail.

The perceived failure of the justice system to prevent Monis, a convicted felon well known to the authorities, from seizing a cafe in the city's financial district in broad daylight, has sparked calls for a tightening of the bail system.