Attorney General Loretta E. Lynch said Monday that the United States’ crackdown on corruption in global soccer was expanding, with new charges expected in the coming months.

Ms. Lynch made the comments in Switzerland, not far from the headquarters of FIFA, soccer’s global governing body, at the start of a week in which the FIFA investigation will take center stage in Europe. Law enforcement officials from around the world are congregating for conferences in Zurich and Amsterdam to hear how the case came together and how it might unfold.

“We anticipate pursuing additional charges against individuals and entities,” Ms. Lynch said Monday of the United States’ inquiry, a coordinated effort among the Department of Justice, the Federal Bureau of Investigation and the Internal Revenue Service.

Ms. Lynch spoke in a joint appearance with Michael Lauber, the Swiss attorney general, who is leading a parallel investigation of corruption in FIFA. Their news conference took place at the Renaissance Zurich Tower Hotel, two miles from the luxury hotel where seven top soccer officials were handcuffed at dawn in May in a wave of arrests that have left FIFA in turmoil.