翻译原文：

Police are investigating a car near Hyde Park amid fears that it may be connected to a bomb defused by authorities hours earlier in London's West End.

 The eastern side of Hyde Park was evacuated after Park Lane, which borders the park, was closed between Marble Arch and Hyde Park Corner at 2.30 this afternoon, while a police robot investigated the car.

 A 200m cordon was put in place, cutting off one of London's major transport arteries and causing further traffic chaos, after reports of the suspicious vehicle.

The dramatic new development came after an explosive device, consisting of gas cylinders and nails, was found outside the Tiger Tiger nightclub at 2am in The Haymarket, near Piccadilly Circus, in the heart of London's tourist district.

 Jacqui Smith, the new Home Secretary, called an emergency meeting of top officials this morning, calling the attempted attack "international terrorism."

She said: "We are currently facing the most severe and sustained threat to our security from international terrorism.