Reuters reports:

A cell phone has been found near the site of one of Friday’s Paris shootings with a map of the music venue that was attacked and a text message on it saying words to the effect of “let’s go”, a source with knowledge of the investigations said.

Confirming reports on French web site Mediapart and US television channel CNN, the source said the phone was found in a dustbin near the Bataclan concert hall where the bloodiest of the shootings took place.