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Latest reports suggest that the US government shutdown has caused the delay in the launch of Google's next flagship Nexus 5 and the rumoured smartwatch.

The approval process for the launch was delayed, forcing Google to cancel the initial release date i.e. 15 October, reported Tech Radar.

It is now speculated that 31 October is the date when Google will pull the wraps off its much-awaited Google Nexus 5 and Google smartwatch.

Several months ago, a Best Buy store in the US reserved some space exclusively for Google, giving rise to speculation that the display was set up for the upcoming Nexus 5, reported Phone Arena.

Recently, a few images purported to be of the Nexus 5 carrying Android 4.4 KitKat were leaked online along with the specifications, reported TuttoAndroid.

The upcoming Nexus 5 is expected to sport a 5-inch display with screen resolution of 1920X1080 pixels, 2GB RAM and a 13-megapixel rear facing camera.

Nexus 5 is said to be manufactured by LG, which also makes the current Nexus 4 model. It is also expected to be based on the recently launched LG G2 smartphone and therefore most of its specifications will be similar.

The search engine giant has promised its fans that the software update Android 4.4 KitKat will arrive in October and it is expected to rollout alongside the Nexus 5 and its smartwatch. The software update was initially rumoured to be called Key Lime Pie.