Dias, who won the men’s World Para Swimming World Series title last year, achieved a time of 36.38 seconds to triumph in the Brazilian city.

The 14-time Paralympic gold medallist was awarded 1,028 points for his effort.

He finished ahead of team-mate Ronystony Da Silva, who recorded 47.46 seconds to earn 589 points.

An all-Brazilian podium was rounded off by Francisco Avelino, as he clocked 48.25 to receive 554 points.

The women’s event saw Edenia Garcia top the podium with 909 points, after she produced a time of 56.07.

Her team-mates Maiara Barreto and Tisbe Silva rounded off the podium with 753 and 611 points, respectively.

The duo finished in times of 1min 1.69sec and 54.12.

Argentina’s Daniela Gimenez triumphed in the women’s 200m medley event after clocking 2:41.87, which saw her receive 888 points.

Brazil’s Beatriz Carneiro and Pamella Andrade ended in times of 2:41.88 and 3:13.64, respectively, to round off the top three on 786 and 776 points.

A second World Para Swimming World Series event is taking place simultaneously in Glasgow, with competition held at Tollcross International Swimming Centre.

As far as São Paulo is concerned, it will be the third successive year that the Brazilian Paralympic Training Centre stages a World Series event.

Around 250 swimmers from 16 countries are competing.