As Istanbul's mayor remains jailed, pressure mounts on opposition-aligned media to soften their criticism, analysts say.

ISTANBUL — The mayors of three major cities in southern Turkey were arrested Saturday, state-run media reported, joining a growing list of opposition figures detained since the mayor of Istanbul was imprisoned in March.

A crackdown on Erdogan's rival Republican People's Party continues, as three mayors from southern Turkey are held.Turkey detained three more mayors from the main opposition party on Saturday, according to a prosecutor's statement and media reports.