Sen. Angus King, I-Maine, said Sunday the first indictments under special counsel Robert Mueller’s Russia probe, expected to be made public Monday, are “really just the beginning.”

“Like everyone else in Washington, I’ll be watching tomorrow to see what comes out of the Mueller investigation, but I think it’s important to emphasize that this, whatever it is, is really just the beginning,” King told CNN, referring to the first charges. “And I’m sure there will be additional evidence, assuming Director Mueller uncovers additional evidence.”