MUMBAI: Avatar, the James Cameron‘s 3-D blockbuster, has garnered another $30 million over the weekend in the US and Canada as it continues to rule the worldwide box-office charts.

Industry experts estimate that the movie is expected to grab $2 billion worldwide by later this week.

Meanwhile, occupying the second position is the thriller flick, Edge of Darkness starring Mel Gibson. The film has collected $17.1 million.

Standing in the third spot is the Disney comedy, When in Rome earned $12.1 million, which made $12.1 million at the box-office.

Tooth Fairy, meanwhile, has made $10 million in the week.