After a goalless first half, Dries Mertens scored the opener in the 47th minute, and Lukaku scored twice in the 69th and 75th minutes of the game.

Tunisia and England, also drawn in Group G alongside Belgium and Panama, will meet later on Monday in Volgograd.

The 2018 FIFA World Cup kicked off on Thursday and will continue through 15 July, with a total of 64 matches set to be played at 12 stadiums across 11 Russian cities.