Actress Natasha Richardson’s sons were at her bedside in hospital today after she suffered a serious head injury in a fall at a ski resort.

Actress Natasha Richardson was in the United States today after suffering a head injury during a fall at a Canadian ski resort.

ACTRESS Natasha Rich-ardson, who was critically injured in a skiing accident, was flown to the United States last night, according to a news agency quoting Montreal’s Sacre-Coeur Hospital.

Concerns remain over the health of Natasha Richardson tonight after the actress suffered a head injury during a fall at a Canadian ski resort.

At least four people were crushed to death in their cars after an overpass collapsed near Montreal.