SAN FRANCISCO (AP) — An ex-California state senator has pleaded guilty to a racketeering charge in an organized crime and public corruption case centered in San Francisco's Chinatown. The FBI also alleged that the San Francisco Democrat, who was running for secretary of state at the time, conspired to connect an undercover agent with an international arms dealer in exchange for campaign contributions. A former California state senator charged in a sweeping organized crime and public corruption case centered in San Francisco's Chinatown may have reached a plea deal with federal prosecutors. Leland Yee, who previously has pleaded not guilty to bribery, money laundering and other felony charges, was scheduled to go on trial in late July along with three co-defendants. The FBI also alleged that the San Francisco Democrat, who was running for secretary of state at the time, conspired to connect an undercover agent with an international arms dealer in exchange for campaign contributions.