An adult and three children have been taken to hospital in a serious condition after a tree fell in Central Park in New York.

Rescuers were called about mid-morning on Tuesday to Central Park West near 62nd Street.

A witness said a woman briefly lost consciousness and people tried to lift branches off her. The witness said the woman was with three children.

Authorities have said the four people involved had non-life-threatening injuriesAuthorities have said the four people involved had non-life-threatening injuries (Mary Altaffer/AP)

The ages of the children were not known.

Online images showed the large uprooted tree on the ground, blocking the road.

Witnesses said they heard a cracking sound and the large tree crashed seconds later.

Authorities later said the four had non-life-threatening injuries.