A 25-year-old man held for assault after actress Lindsay Lohan claimed he grabbed her in a New York hotel room in an argument over mobile phone images was freed hours later and his arrest expunged when the charge could not be substantiated, police said.

Actress Lindsay Lohan got into an argument with a man in her New York City hotel room over photos on a mobile phone and she was physically grabbed or thrown, police said .

The US terror investigation that has hauled in hundreds of Middle Easterners is being conducted with closed court hearings and sealed documents on a scale legal experts say may be unprecedented.