Greater Manchester's Deputy Chief Constable Ian Hopkins has tweeted:
My thoughts very much with the family and colleagues of @gmpolice PC Gareth Francis after the shocking news of his death.
More top news
The full list of winners of the 89th Academy Awards in Hollywood.
The Oscars was plunged into chaos as La La land was mistakenly announced as the best picture, the actual winner was Moonlight.
The tourists had no idea they were about to be dropped off at the star-studded ceremony to meet A-listers.