A senior U.S. State Department official said Friday that migration talks with the Cuban government this week have been productive and yielded “some positive outcomes,” but did not give concrete details of any agreements or breakthroughs.

Alex Lee, deputy assistant secretary at the State Department’s Bureau of Western Hemisphere Affairs, told reporters that the Obama administration is open to seeking a new relationship with Havana, but it should go hand-in-hand with more political freedom in the Communist-run nation.