A Chinese worker has been killed and at least 90 other people injured as protesters attacked a steel mill in Vietnam, amid anti-China tensions over the South China Sea dispute.
The incident took place at a Taiwanese-owned mill in Ha Tinh province.
It came a day after protesters burnt several foreign-owned factories at an industrial park.
The demonstrations have been sparked by China's movement of a drilling rig into waters also claimed by Vietnam.
The rig was brought into waters west of the disputed Paracel Islands earlier this month, leading to collisions between Vietnamese and Chinese ships as Vietnam sought to block the move.
Several anti-China protests have since taken place in Vietnam. Nationalist sentiment is currently running very high over the issue, correspondents say.
On Tuesday, at least 15 foreign-owned factories were set on fire at industrial parks in Binh Duong province, and hundreds more attacked. No casualties were reported.
One eyewitness told the BBC the protesters seemed to have targeted companies that had Chinese characters in their signs.
Stability fears
The latest incident happened overnight at a huge steel plant owned by Formosa Plastics Group.
Taiwan's envoy in Vietnam said one Chinese worker was killed and 90 other people injured.
A local police official also confirmed this account. "One Chinese worker is dead. We are trying to identify the body," he told AFP news agency.
In a statement quoted by Reuters news agency, the company said its Vietnamese and Taiwanese workers were not attacked.
Taiwan's envoy told AFP news agency that rioters forced Chinese workers into a corner of the factory. "The rioters have gone but we are all still concerned they might come back," he said.
Doctors at Ha Tinh General Hospital told agencies several Chinese patients were being treated for injuries.
On Wednesday, Vietnamese authorities said at least 200 people had been arrested over the violence at the industrial park in Binh Duong.
The BBC's Nga Pham says the protests have confirmed the government's worst fear that nationalism could easily get out of hand, posing a risk not only to the business environment but also to domestic political stability.
China's tourism body has urged its nationals to "carefully consider" any travel to Vietnam.
China claims a U-shaped swathe of the South China Sea, including several areas that its South East Asian neighbours say belong to them.
In recent years it has started to enforce these claims more assertively, leading to severely strained ties with the Philippines and Vietnam in particular.
The Philippines is currently taking China to a UN court to try to resolve the issue.
Are you in Vietnam? Were you at a recent protest? Email us athaveyoursay@bbc.co.uk adding 'Vietnam protests' in the subject heading and including your contact details.
Or tell us about your experience using the form below.
Send your pictures and videos to yourpics@bbc.co.uk or text them to61124 (UK) or +44 7624 800 100 (International). If you have a large file you canupload here.