NEW : Man arrested at the White House after Russian Foreign Ministry alert . NEW : Mikhail Semenko allegedly buried money in Virginia park . Asked about the matter again following the news conference with Lieberman , Lavrov said , `` I have already said everything . '' Interpol says arrests are `` regrettable '' against background of renewed U.S.-Russia relations . Documents say suspects were involved in long-term missions in the Virginia .
NEW : Man arrested at the White House after Russian Foreign Ministry alert . NEW : Mikhail Semenko allegedly buried money in Virginia park . Interpol says arrests are `` regrettable '' against background of renewed U.S.-Russia relations . Documents say suspects were involved in long-term missions in the Virginia .