Security forces in Vietnam forcibly broke up an anti-China rally in Hanoi Sunday by detaining protesters and journalists covering the event.
As soon as protesters gathered within sight of the Chinese embassy in Vietnam's capital, police herded them onto buses, along with journalists and cameramen recording the rally.
Authorities have allowed the rallies on five previous Sundays in a row.
The move to crack down on the protests comes two weeks after officials from Vietnam and China met in Beijing and said they had agreed to negotiate to peacefully resolve a territorial dispute in the South China Sea.
Vietnam says Chinese boats have hindered oil exploration within its economic exclusive zone, 300 kilometers off the coast.
Beijing accuses Vietnam of endangering Chinese fishermen in a contested area near the Spratly islands, which are claimed all or in part by both countries and several other Asian nations.