Police were called to an N-DUBZ show on Saturday (03Apr10) over reports the U.K. hip-hop stars fired toy paintball guns at fans.
N-Dubz rappers Fazer and Dappy infuriated concertgoers after shooting green paint pellets at youngsters lining up for the gig at the O2 Academy in Newcastle, England.
The stars are said to have been taking shots from their tourbus, which was parked nearby.
Authorities were called to the scene, where they gave "advice" to the stars and confiscated the guns.
A spokesperson for the Northumbria Police confirms, "Police were called to a coach at the back of the O2 Academy following a complaint that pellets were being fired. The two people involved had been firing plastic guns at each other which discharged a 6mm-sized pellet.
"They were very apologetic and handed the toy guns over voluntarily. No complaint of injury has been made. No arrests were made. Advice was given to the parties involved."
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The film is expected to continue without Mendes' involvement.