Tom Cruise was drenched with water at the London premiere of his new film, 'War of the Worlds', last night.
Four men, who were working on a new Channel 4 comedy show, were arrested and subsequently bailed, following the prank.
Cruise was meeting fans in Leicester Square when a bogus reporter stuck out a joke microphone and used it to squirt water into the actor's face.
The 42-year-old star reacted angrily to the prank, repeatedly calling the man who soaked him "a jerk".
Cruise got engaged on Friday to 'Dawson's Creek' star Katie Holmes.
Holmes accompanied Cruise on his walkabout, but was not beside him when the incident happened.
Cruise dried himself off and continued to meet fans.
In a statement today, Channel 4 said: "The incident that took place on Sunday evening involving Tom Cruise was for a new Channel 4 entertainment show, part of which involves playing light-hearted comedy pranks on celebrities and members of the public."
The statement continued: "The stunt was intended to be light-hearted rather than malicious and we would apologise to Mr Cruise for any offence that was caused."
