Few leads in finding American kidnapped in Pakistan

LESTER HOLT, anchor: Overseas tonight, there are far more questions than answers tonight about yesterday's kidnapping of a US citizen living in Pakistan . There's been no ransom demand, no claim of responsibility, nothing. NBC 's Ian Williams reports from Lahore , Pakistan , on what we do know tonight.

IAN WILLIAMS reporting: Police have been interrogating the guards at the house from which Warren Weinstein was grabbed by gunmen in the early hours of Saturday morning, but so far appear to have few leads. Weinstein , a development expert, was due to leave Pakistan Monday after seven years as country director for J.E. Austin , a development contractor, and reportedly planned to return to the United States where he has a home in Rockville , Maryland . Yet Weinstein was hardly known to neighbors in the upscale model town area of Lahore .

Unidentified Man: He never used to see his neighborhoods. Even when our ball would go into his lawn while playing cricket, his guards used to return the ball. We never saw him outside his house .

WILLIAMS: Police refused to discuss a possible motive in a country where anti-American tensions are at an all time high after the killing of Osama bin Laden . Passed abductions have involved both al-Qaeda linked militants and criminal gangs looking for payoffs.

Mr. ROGER CRESSEY (NBC News Terrorism Analyst): His chances of survival really depend on who kidnapped him. If it is a criminal intent, then it's a high likelihood he will be able to survive and it's just a ransom demand. If it's a militant group, then certainly it could be far more serious.

WILLIAMS: Police said eight kidnappers forced their way into the house as the guards ate a traditional predawn meal at 3:30 AM . One official said kidnappers wore western style shirts and trousers and hit Weinstein on the head with a pistol to subdue him before taking him away. The large house has two gates and walls around six feet high. Only last Monday Washington revised a travel warning for Americans in Pakistan . A warning underlined by the apparent ease with which the kidnappers overcame Weinstein 's security guards . The US State Department says it is working with the Pakistani authorities in the investigation. Ian Williams , NBC News, Lahore , Pakistan .