Naomi Watts & Liev Schreiber's Son Hospitalized

A pregnant Naomi Watts and Liev Schreiber attend a screening of 'Filth and Wisdom' in New YorkGetty ImagesAccess Hollywood

NEW YORK, New York -- Naomi Watts and Liev Schreiber 's son Alexander was hospitalized overnight on Tuesday, Access Hollywood has confirmed.

The 21-month-old, nicknamed Sasha, had respiratory issues but was released on Wednesday morning.

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"Sasha got home today and is feeling much better after being hospitalized on Tuesday night with respiratory problems," a rep for Naomi said in a statement to Access.

Liev flew home to New York on Tuesday to be with his family, a trip that Access has learned was already planned - he is due back on the set of "Salt," and is thought to have arrived home before his son's illness occurred.

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The trip caused the actor to miss the Los Angeles premiere of his latest film, "X-Men Origins: Wolverine," in which he stars as the title character's arch-nemesis, Sabretooth.

Liev and Naomi have two children together; Alexander and his younger brother, Samuel, who was born in December of last year.

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