MANILA, Sept. 20 -- The respective embassies of the United States and France have issued an alert reminding their nationals to avoid demonstration areas across Metro Manila as thousands are anticipated to march in anti-corruption rallies nationwide on Sunday.

"US citizens should avoid these demonstrations due to the potential for violence," the US Embassy in Manila said in an advisory dated Sept. 19.

"Exercise caution when in the vicinity of any large gatherings, as even peaceful demonstrations have the potential to turn violent without warning. Follow instructions from local authorities," it added.

A similar demonstration alert calling for vigilance among French nationals in the Philippines was posted by the French Embassy in Manila o...