Tokyo, June 26 -- Tight security measures were being enforced in the Japanese city of Osaka on Wednesday ahead of the G20 summit during which tens of thousands of policemen are expected to be deployed.

The summit on Friday and Saturday will be held at a convention centre located on an island in Osaka Bay, although several leaders such as US President Donald Trump will stay in hotels in other parts of the city.

Never in its history has Osaka - Japan's second most populated city with 19 million inhabitants, after Tokyo - been subject to stricter security measures, Efe news reported.

Two days ahead of the gathering, the waterfront area surrounding the convention centre was barricaded by the police, with only accredited people being permitte...