Afghan police rescued a German aid worker who was snatched while dining with her husband at a restaurant in the capital, and arrested four suspected kidnappers in the sting operation Monday, officials said. Hundreds of police surrounded a house to free the 31-year-old woman in a raid at 12:30 a.m. (2000 GMT Sunday) in western Kabul, not far from the area where she was taken captive on Saturday, said Interior Ministry spokesman Zemerai Bashary. He said authorities have arrested and are interrogating "four suspects who are directly involved in this case." He described them as the ringleader and three of his friends. Bashary said more than 300 police were involved in the operation.