Los Angeles - Horror movie The Possession held its grip on the box office for a second week, but North American ticket sales slumped in the worst movie-going weekend for at least four years.

With only a handful of new releases to tempt movie fans, The Possession pulled in just $9.5-million in the United States and Canada. The top 12 films grossed an estimated $52-million in total - a 40 percent drop from last week and about 20 percent down on the same weekend in 2011.

Early September is historically sluggish at the US and Canadian box offices. After blockbuster releases over the summer, studios reserve their big films for the November and December holidays.

But revenues for the three-day movie-going weekend were particularly low, with the total gross for all films expected to be about $67-million. The post-US Labor Day weekend in 2008 pulled in $68-million.

“It is pretty scary when the top movie comes in at only $9.5-million,” said Paul Dergarabedian, box office analyst at Hollywood.com.

“This is one of the worst-grossing weekends of the last 10 years. In the summer, single movies had opening weekends bigger than this entire weekend gross,” he added.

However, Dergarabedian said hope was on the way next week with the next installment of the Resident Evil horror franchise and the re-release of Disney/Pixar's 2003 family film Finding Nemo, this time in 3D. - Reuters