A red double-decker bus has exploded on Lambeth Bridge in central London. No, it’s not a terrorist attack, it’s a scene for a movie, “The Foreigner,” starring Pierce Brosnan and Jackie Chan.

Londoners were left shocked and some were angry that they had not received adequate warning beforehand. The bus was travelling over Lambeth Bridge when it suddenly exploded into an orange fireball which blew up the bus’ roof, filling the sky with black smoke, scaring away birds soaring nearby.

Local MP Nigel Huddleston took to Twitter in asking Londoners not to worry as it was just a stunt for a film. “Anyone worried about the exploding bus on Lambeth Bridge just now?” he tweeted. “It was just for a movie.”

The sight terrified some children as well, according to some complaints. Author Sophie Kinsella tweeted: “Hey film types, next time you blow up a bus on Lambeth Bridge maybe tell us first so children in park aren’t freaked?”

“Some may fear it was for real if far away enough not to see the cameras and crew,” MP Huddleston told Sky News.  “Local residents and businesses were informed and notices posted in lobbies and lifts saying to expect ‘a controlled explosion’ between 9 a.m. and 10 a.m.,” Huddleston said, reports The Guardian. He acknowledged, however, that walking past parliament a few minutes later, “some tourists clearly had no idea whether it was real or not.”

The bridge was confirmed by Port of London Authority to have been closed for filming, and according to Sky News, the film’s producers posted a warning on Twitter beforehand which said: “The explosion is controlled and operated by our special effects team.”

The explosion scene was reminiscent of the 2005 attack on London’s transport system that killed 52 civilians. That attack included the explosion of a bus in central London.

According to express.co.uk, John Taylor, whose 24-year-old daughter Carrie was killed at Aldgate Station on 7/7, said the stunt was “insensitive” and more care should have been taken to inform Londoners of the explosion.

“So with the country on terrorist alert who thought blowing up a bus on Lambeth Bridge for a film was a good idea? Money talking again,” a Twitter user named “Beast of Stephen” posted on his page.

“It is great that London is such a desirable location for filming but the filmmakers and authorities could clearly have done a better job at communicating – especially in times of heightened security,” Huddleston added.

“The Foreigner” is based on the 1992 book “The Chinaman” by Stephen Leather which stars Jackie Chan and former James Bond star, Pierce Brosnan. It is directed by Martin Campbell, known for the James Bond movies “GoldenEye” and “Casino Royale.”

A video of the filming can be seen below.