Under close watch of riot police, French high school students have been protesting in Paris against both presidential candidates — far-right Marine Le Pen and centrist Emmanuel Macron.

Students blocked entrances to some high schools Thursday and marched through eastern Paris toward the neighborhood of the Bastille. Some held banners reading "No Fatherland, No Boss, No Le Pen, No Macron," referring to Le Pen's nationalist campaign and Macron's pro-business campaign.

An election-night protest in the same area Sunday degenerated into clashes between projectile-throwing demonstrators and police firing tear gas.

A Paris school district official said that teens blocked or tried to block some 20 high schools in the Paris area Thursday morning. Students are holding demonstrations in front of some schools.