The FBI has made another round of arrests of Wall Street traders as part of an ongoing corruption probe that authorities have considered one of the most extensive insider trading investigations in history.

At least two traders, including one person in New York and another person in Boston, were arrested Wednesday by the FBI, sources familiar with the investigation told NBC New York.

Sources said Anthony Chiasson, co-founder of Level Global Investors, was not at his Manhattan home this morning when FBI agents attempted to arrest him. Chiasson is expected to surrender to the FBI later today.

Those arrested are expected to face insider trading charges and other related counts. U.S. Attorney Preet Bharara is expected to outline further details of the case later Wednesday.

The arrests, which include hedge fund traders and analysts at expert networks, are part of the FBI’s ongoing investigation into insider trading in the hedge fund industry, dubbed “Perfect Hedge.”

READ MORE: NBC NEW YORK