Michael Jackson film This Is It has topped the North American box office in its first weekend of release.

Michael Jackson纪录片This Is It首映一周即达到北美票房排行榜首位。

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The film opened simultaneously around the world

The film, which was released worldwide on 28 October, took $21.3m (£13m) over the weekend, taking its five-day haul（用力拖拉，努力的结果） to $101m (£61.5m).

Columbia Pictures said it now plans to extend the film's two-week limited run in North America until 29 November.

Low-budget horror Paranormal Activity slipped from first-place to number two with $16.5m (£10m).

The sleeper-hit has now taken $84.8m (£51.8m) in its sixth week of release.

Gerard Butler action film Law Abiding² Citizen and romantic comedy Couples Retreat both rose one place to four and five respectively.

Horror sequel Saw VI and Spike³ Jonze film Where The Wild Things Are both fell three spots to five and six.

There were no other new releases in the chart as film companies shied away from competing with the Halloween weekend.