Eleven people were injured during a violence occurring in Samsung factory in Vietnam's northern Thai Nguyen province on Thursday.

Serious violence erupted in Samsung factory in Thai Nguyen province, some 60 km north of capital Hanoi on Thursday, drawing participation of thousands of workers.

An official from Thai Nguyen 91 Military Hospital told Xinhua over phone that no one was killed as early reported by local media.

Eleven people had been taken to hospital on Thursday morning after being beaten.

As of late Thursday afternoon, three with slight injuries were allowed to go home. The more seriously injured patients are still kept at hospital for further treatment. The official said the current health situations of the patients are quite stable.

According to Vietnamese local Vnexpress online newspaper, security guards at Samsung prevented a worker from getting into Samsung's building site without entrance card. Argument broke out between the two sides. The worker then was hit to faint by security, causing anger of the worker crowd.

Xinhua in Hanoi Bureau on Thursday contacted with police department of Thai Nguyen province but they denied to release any details on the case.

Leaders of Hanoi-based Hoa Binh Security Service Company, the one providing security service for Samsung factory, are said to leave for Thai Nguyen to solve the incident, a company staff told Xinhua over phone.

In 2013, Samsung, a South Korean multinational electronics company, invested a total of 3.2 billion U.S. dollars to build a high-tech complex in Vietnam's northern Thai Nguyen province to produce Integrated Circuit, or IC chip, and electronic components for mobile phones.

Upon completion, Thai Nguyen-based factory is expected to be the largest Samsung site in the world that will start running in March 2014.

The total number of production and construction workers in Samsung site in Thai Nguyen is up to ten thousand people.