Security had been reportedly stepped up on the set of the new Harry Potter movie after the studio received a chilling phone call over the weekend.

Leavesden Studio near London answered the menacing phone call on Friday (Aug. 13), which warned of a brutal attack on the film's young stars. Police reportedly responded with watch dogs to patrol the studio area.

A source from Leavesden Studio told the press, 'The caller apparently said, 'It's payback time... this is for all you've done to our women and kids.' The film is being made by American company Warner Bros. so it sounds like it could have an Iraq or Al-Qaeda connection.'

But it appears the young wizard should be more concerned about Lord Voldemort's wrath than of threats from Al-Qaeda.

Yesterday, CBBC Newsround Online site reported that the terrorist threats at the Harry Potter movie set have been massively exaggerated.

'As with all responsible companies we take the well being of those within our employment, particularly children, very seriously,' a spokesperson for Warner Bros. told CBBC.

'We have in the past received the odd hoax telephone call, but because of our strict security policies we always report these incidents no matter how seemingly trivial, to the relevant authorities. In this case as with previous hoax calls, no further action has been taken nor will be required'.

Harry Potter and The Goblet of Fire is slated to be released by Warner Bros. in November 2005.