Hundreds of Free Tibet campaigners are expected on the streets of London on Sunday as the Olympic torch relay passes through the city on its 31-mile route from Wembley stadium to the O2 Arena in Greenwich.

The Metropolitan Police said four protesters were arrested on Saturday. Police were alerted to reports of two men climbing the side of Westminster Bridge. "The two men erected a banner and were removed by officers," she said. "A further two protesters were arrested."

Officials were forced to extinguish the Olympic torch twice Monday as protests against China's human rights record and its rule of Tibet turned a relay through Paris into a scene of disruption.

At least two activists got within almost an arm's length of the torch and one tried to throw water on the flame before he was grabbed by police, The Associated Press reported. Security officials had to twice extinguish the torch for "technical reasons" -- and put it on a bus one time -- due to the raucous demonstrations.

A police source told Reuters that organizers were forced to put the torch on a bus to protect it from the hundreds of protesters who swarmed the relay route after the Eiffel Tower.

Chinese officials are coming here next week to work out foolproof security for the Olympic torch here but Indian officials say they can very well protect the games’ symbol on their own. India Monday assured China that it was committed to providing security to the Olympic torch as it passes through its territory April 17, notwithstanding fears of street protests by Tibetans.

Minister of State for External Affairs Anand Sharma clarified that the government has not got any proposal that the Chinese wanted to provide security to the torch procession in India.

“There is no proposal as such. Indian security agencies are capable of ensuring safety of the Olympic torch relay,” Sharma told reporters here.

“We will give due respect to the torch and are committed to providing security to the torch.