Dharamsala, Jan. 28 - In a reinforced launch of "strike hard" campaign, Chinese authorities in Tibet’s capital Lhasa have detained 81 Tibetans , according to state-run Tibet Daily

The detainees include two Tibetans whose mobile phones had "reactionary music", probably songs in praise of exiled Tibetan leader Dalai Lama.

The arrests were made by Public Security Bureau after the launch of "strike hard" campaign on January 18 this year. Since then, the Public Security Bureau raided several residential areas, hotels, restaurants, guesthouses, internet cafes and bars. 5766 Tibetans were rounded up since the campaign began.

China which first introduced "strike hard" campaign against crime and corruption in 1983, is using the campaign as a guise to crack down on political dissent, say exile Tibetan campaign groups.

"With unprecedented levels of security already in place throughout Tibet, this latest campaign appears to be intended to intimidate Tibetans still further in the build-up to the Tibetan new year in late February, the 50th anniversary period of the March '59 uprising and the Dalai Lama's flight to India, when the authorities fear further unrest," the US based International Campaign for Tibet said in a statement.

The Tibetan Centre for Human Rights and Democracy said in a statement last week that the campaign’s objective is to detain those Tibetans suspected to be involved in the 2008 spring protests, and target former political prisoners.

“Under this campaign, the State law enforcement bodies abuse the fundamental human rights of the Tibetan people through arbitrary arrest, detention, interrogation and torture, dismissal from jobs and expulsion from religious institutions.”