Amid reports that the Mumbai attackers included British citizens of Pakistani origin, Premier Gordon Brown said it was too early to tell whether Britons were involved in terror strikes on two luxury hotels and other public places in India's financial hub.

Brown said he would discuss the attacks with Prime Minister Manmohan Singh, as the Indian Government said the attackers came from outside the country.

Asked about the media reports that said the terrorists included ‘British citizens of Pakistani origin’, Brown told Sky News: "I would not want to be drawn into early conclusions about this."

"There is so much information still to be discovered and made available. I have heard what Prime Minister Singh has said and I'll talk to him about it. But obviously when you have terrorists operating in one country they may be getting support from another country or coming from another country and it is very important that we strengthen the cooperation between India and Britain in dealing with these instances of terrorist attacks," he said.

Brown said as far as the Government was aware, there were no British hostages in Mumbai now.

He said ministers were determined to do what they could to help the Indian authorities dealing with the attacks.