Iran says the killing of a young scientist Saturday was a "U.S.-Zionist terrorist act."
Darioush Rezai-Nejad, 35, was gunned down in Tehran on Saturday by assailants who also wounded his wife, according to state-run Iranian media.
A number of Iranian nuclear scientists have been attacked in recent years, but officials said in this case there may have been a mistake. Official media said Rezai-Nejad, a promising graduate student, may have been killed because his name is similar to another scientist, who does work on Iran's nuclear program.
New York is now the sixth state, along with the District of Columbia, allowing same-sex marriages.
Across the Empire State, couples exchanged vows shortly after midnight. At Niagara Falls, gay marriage activists Kitty Lambert and Cheryle Rudd were wed in front of the rainbow-lit falls just a second or two after the clock struck 12.