Reuters reports Burundi President Pierre Nkurunziza warned on Friday of tough measures against those staging protests against his decision to seek a third term, a move opponents say violates the constitution and endangers a peace deal. Chanting anti-Nkurunziza songs and blocking a road with boulders, hundreds of protesters gathered in Bujumbura's southern suburb of Musaga on Friday, the sixth day of protests. Unlike previous days, there were no scuffles with police. Urging protesters to stay off the streets, Nkurunziza said the demonstrations were illegal and announced a new judiciary commission would investigate the "insurrectional movement." More than 600 students have sought refuge at the U.S. embassy after the government, citing security fears, closed the University of Burundi on Wednesday. Nkurunziza taught physical education at the university in the mid-1990s.