'The Ring Two' tops US box office chart

Chilling sequel The Ring Two has knocked Robots off the top spot of the North American box office chart.

The movie, starring Naomi Watts and David Dorfman as a mother and son whose lives become complicated with the return of a mysterious video cassette, took $36m (£18.8m)in its first weekend, according to box office tracker Exhibitor Relations. The 2002 original opened with $15m (£7.8m).

Previous number one Robots was pushed to number two, gathering $21.8m (£11.4m) over the weekend, bringing its total to $66.9m (£34.9m).

The North American top ten in full:
1. The Ring Two
2. Robots
3. The Pacifier
4. Ice Princcess
5. Hitch
6. Be Cool
7. Hostage
8. Million Dollar Baby
9. Diary Of A Mad Black Woman
10. Constantine