WASHINGTON—A Capitol Hill staffer has been removed from his job on the House Foreign Affairs Committee amid questions about his contacts with pro-Russian operatives and lobbyists.

Paul Behrends, who serves as a top aide to Rep. Dana Rohrabacher (R., Calif.), left his job as a staff director on the House Foreign Affairs Committee, the committee revealed this week. A person familiar with the matter said Mr. Behrends was fired over concerns about his Russia contacts.

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