With the score 1-1 after 90 minutes, Mbour scored in the first period of extra time to win 2-1, and violence broke out at the final whistle.
A wall collapsed yesterday at Demba Diop stadium as people attempted to leave after the game between local teams Ouakam and Stade de Mbour, APS reported, adding many more were injured.
Part of a wall supporting bleachers seating fans from both sides then collapsed as police starte firing tear gas. Sall also ordered Senegal's prime minister to "take all the necessary measures to improve security in the stadiums", a presidential statement reads.
"UEFA would like to send its condolences to the Senegalese Football Federation following the tragic events which occurred at the Demba Diop Stadium in Dakar on Saturday evening", the statement said on Sunday.
According to him, the police is withdrawn from a zone separating the supporters of the two teams when projectiles began to fly, leading the crowd in the spectators unable to defend themselves. The light will be cast on this tragedy.
A presidential spokesman said campaigning for Senegal's legislative elections on July 30 had been suspended to pay respect to the stadium victims.
This comes in the wake of the football stadium disaster in Dakar with eight people confirmed dead and sixty injured.
Deadly stampedes at football matches have been common in Africa, where safety standards are low.