Transformers: Age Of Extinction has secured a second week at the top of the North American box office after earning another $36.4 million (£21.4 million) over the Independence Day holiday weekend (04-06Jul14).

Last week (29Jun14), the Michael Bay action film, starring Mark Wahlberg, scored the biggest movie debut of the year (14) so far with a massive $100 million (£58.8 million) haul and it has continued to be a popular choice with families celebrating the three-day weekend.

It easily crushed Melissa MCCarthy and Susan Sarandon's new comedy Tammy, which opens in second place with $21.2 million (£12.4 million), while Eric Bana's horror film Deliver Us from Evil debuts at three with $9.5 million (£5.59 million).

22 Jump Street and How to Train Your Dragon 2 round out the new top five.