District 9 has topped of the US box office with $37 million over the weekend.

The Peter Jackson-produced sci-fi thriller has knocked G.I. Joe: The Rise Of Cobra to the number two position with $22.5 million.

The US box office top ten:

1. (-) District 9 – $37,000,000
2. (1) G.I. Joe: The Rise Of Cobra – $22,500,000
3. (-) The Time Traveler’s Wife – $19,205,000
4. (2) Julie & Julia – $12,400,000
5. (3) G-Force – $6,908,000
6. (-) The Goods: Live Hard, Sell Hard – $5,350,000
7. (4) Harry Potter And The Half-Blood Prince – $5,155,000
8. (6) The Ugly Truth – $4,500,000
9. (-) Ponyo – $3,506,000
10.(10) (500) Days of Summer – $3,025,000