Senegalese authorities have arrested a lawyer for Karim Wade, a former president's son who is on trial on corruption charges.

The verdict is the case is expected next week and tension has been rising during the trial. Wade's supporters say the trial is part of a political vendetta being waged by President Macky Sall, who defeated Wade's father at the polls in 2012.

Oumar Sarr, an official with the opposition Senegalese Democratic Party, says the lawyer, Amadou Sall, was arrested Monday. The police did not return calls seeking comment, but it is thought he was detained for comments he made during a political event on Sunday. At the event, he said that if Karim Wade was imprisoned, President Sall wouldn't last one more night in the presidential palace.