French minister under pressure amid probe into visit to Las Vegas tech show

Emmanuel Macron was economy minister at the time and used the trip to promote French technology start-ups

A French investigation into a Las Vegas tech party is putting new pressure on President Emmanuel Macron's labour minister - and possibly the president himself - as they pursue difficult reforms to French work rules.

The Paris prosecutor's office has opened a formal judicial inquiry into suspected irregularities in the organisation of a costly, high-profile event at the 2016 Consumer Electronics Show that Mr Macron headlined when he was a government minister.