Acting President Yemi Osinbajo met world leaders, including President Donald Trump of the United States, at the ongoing G7 summit in Italy.
Osinbajo, who was on the same row with Trump, sat in between Shinzo Abe, prime minister of Japan, and Emmanuel Marcon, president of France.
Earlier Osinbajo and Trump posed for photographs outside the hall.
Laolu Akande, spokesman of the acting president, said Osinbajo is expected back in the country later on Saturday.