An American citizen who once lived and attended college in New York City was indicted today on charges of conspiring to send money and military gear to al Qaeda associates who lived in Pakistan, the United States attorney's office in Manhattan said. The defendant, Syed Hashmi, 26, was arrested in London's Heathrow Airport on Tuesday night, as he was trying to board a flight to Pakistan, prosecutors said. Law enforcement officials said the arrest of Mr. Hashmi reinforced their belief that New York was a nexus in a web of worldwide terrorist activity. Mr. Hashmi had an address in Flushing,...