2 Mumbai attackers may be British

WASHINGTON, Nov. 28 (UPI) -- British officials say they were checking out the possibility that at least two British citizens were involved in the Mumbai terror attacks.

Meanwhile, counter-terrorism officials in Europe, the United States and India said the terrorists likely included Islamist networks based in Pakistan -- and may have received support in the past from Pakistan's intelligence agencies, The Washington Post reported Friday.

The officials and experts said the sophistication and targets involved in the attacks, major luxury hotels, a Jewish center and popular restaurants, as well as their size, marked a departure from previous terror attacks in India. But the Post reported officials said it is too soon to say who may have masterminded the attacks, despite a claim of responsibility from a previously unknown radical group.

An Indian regional official has said two of the captured terrorists were British citizens of Pakistani origin, but gave no details.

"I would not want to be drawn into early conclusions about this," British Prime Minister Gordon Brown told reporters about the claim. "There is so much information still to be discovered and made available."