Troops from a number of Gulf¹ states, including Saudi Arabia and the UAE, have arrived in Bahrain at the request of the kingdom, officials say.

官员声称，应巴林的要求，包括沙特、阿联酋在内的一些海湾国家已向其派遣军队。

It comes a day after the worst violence since seven anti-government protesters were killed in clashes with security forces last month.

Dozens of people were injured on Sunday as protesters pushed back police and barricaded²（路障） roads.

Bahrain's opposition³ said the foreign forces amounted to an occupation.

But the kingdom's authorities urged the population to "co-operate fully⁴ and to welcome" the troops, the AFP news agency reports.

'Answering request'

A Saudi official said about 1,000 Saudi Arabian troops arrived in Bahrain early on Monday, and later the UAE said it had sent some 500 police officers.

Witnesses told the Reuters news agency that about 150 Saudi Arabian armoured troop carriers plus other vehicles entered Bahrain on the causeway（堤道） that links the two kingdoms.

The Saudi government said in a statement that it "has answered a request by Bahrain for support", according to the Saudi Spa state-run news agency.

The troops are part of a deployment⁵ by the Gulf Co-operation Council (GCC), a six-nation regional grouping which includes Bahrain, Saudi Arabia, Kuwait, Oman, Qatar and the United Arab Emirates.

It is believed they are intended to guard key facilities such as oil and gas installations（设施，装置） and financial institutions.

Travel warning

The US said it was aware of the deployment.

White House spokesman Tommy Vietor said: "We urge our GCC partners to show restraint and respect the rights of the people of Bahrain, and to act in a way that supports dialogue instead of undermining（腐蚀，破坏） it."

The US Navy bases its Fifth Fleet in Bahrain.

The British and Australian governments have warned against all travel to the kingdom.

Bahrain's Shia majority has long complained of discrimination at the hands of the Sunni ruling elite⁶, but large-scale protests broke out last month after the presidents of Egypt and Tunisia were toppled in uprisings.