California State Sen. Leland Yee has been indicted on charges of public corruption as a part of multiple arrests made by the FBI in the San Francisco Bay Area and Sacramento, Calif. on Wednesday morning, according to multiple sources.

FBI agents raided Yee's office in the California State Capitol, taking computers and other documents, while California Highway Patrol officers and the Sergeant at Arms were stationed outside of his office.

The FBI also raided a building in San Francisco's Chinatown called Ghee Kung Tong Supreme Lodge, a masonic organization linked to the arrest of Raymond "Shrimp Boy" Chow, a notorious former San Francisco gangster indicted on charges of racketeering and drug crimes in 1992, San Jose Mercury News reported. Chow was convicted of gun charges and sentenced to 25 years in prison, but in 2003, he was released after testifying against Peter Chong, an alleged high-ranking leader of a Chinatown gang. Chow's cooperation with law enforcement reduced his sentence to 11 years.

The early-morning arrests involved hundreds of federal agents and local cops, and were part of an ongoing FBI investigation that dates back to a fatal shooting from five years ago, according to sources that spoke with the San Francisco Chronicle. In addition to Yee's office, the FBI searched a building on the 1700 block of Hyde Street and a home on the 600 block of 42nd Avenue in San Mateo.

FBI spokesman Peter Lee confirmed to the Chronicle that Yee and Chow had been arrested. Both are scheduled to be arraigned Wednesday afternoon where they will appear before U.S. Magistrate Judge Nathaniel Cousins.

Keith Jackson, a San Francisco political consultant and former member of the San Francisco Board of Education, was also taken into custody.

Yee is currently running as a candidate for California Secretary of State, and represents San Francisco and part of San Mateo County. He was the first Chinese-American elected to the California State Senate in 2006. Prior to that, Yee served in the California State Assembly from 2002 to 2006, where he was also the first Asian-American to be named Speaker pro tempore — making him the second-most powerful Democrat in the chamber.

Yee's indictment makes him the third Democratic California state legislator this year to be linked to corruption charges. Last month, California State Sen. Ron Calderon of Montebello was accused of accepting $100,000 in return for pushing legislation, and indicted with charges of "mail fraud, wire fraud, honest services fraud, bribery, conspiracy to commit money laundering, money laundering and aiding in the filing of false tax returns."

In January, Sen. Roderick Wright was convicted of eight felony counts of perjury and voter fraud when he had lied about his legal residence to run in a district outside of his actual residence.

UPDATE - March 26, 3:42 p.m. PT: According to a criminal complaint provided to the San Francisco Chronicle, Yee solicited undercover agents for his 2011 San Francisco mayoral campaign and his current California Secretary of State campaign. Yee also participated in a discussion with undercover agents concerning an illegal gun-trafficking deal.

Yee was charged in the U.S. District Court with conspiracy to traffic in firearms without a license and conspiracy to illegally import firearms, as well as six counts of scheming to defraud citizens of honest services. Each corruption count is punishable by up to 20 years in federal prison and a fine of up to $250,000. The gun-trafficking count is punishable by up to five years in prison and up to $250,000.

In the 137-page criminal complaint, 26 people — including Yee, Raymond Chow, Keith Jackson and Keith's son 28-year-old Brandon Jackson — were listed as a part of a racketeering, gun-trafficking, murder-for-hire and money-laundering investigation.

Keith Jackson, the 49-year-old former member of the San Francisco Board of Education, and son Brandon sold guns and bulletproof vests to an undercover agent posing as an member of La Cosa Nostra, the East Coast, Italian organized-crime syndicate, the San Francisco Chronicle reported authorities said in court records. They also "conspired to commit a purported murder-for-hire scheme," the newspaper said.

Chow and others mentioned in the criminal complaint allegedly laundered the undercover agent's money, derived from illegal gambling, drug-dealing, marijuana-growing, bookmaking and sports-betting.

Through one undercover agent, Yee and Keith Jackson were introduced to a second agent that donated $5,000 to support Yee's mayoral campaign. After losing the mayoral race, Yee was left with $70,000 in debt and received a donation of $10,000 from the agent to recoup his losses in exchange for official acts.

Yee agreed to provide an official State Senate proclamation honoring Chow's group in exchange for a $6,800 donation to his California Secretary of State campaign. Yee also accepted a $10,000 donation from a third undercover agent in exchange for introducing that agent to California state legislators.

Have something to add to this story? Share it in the comments.