"I saw hands holding a pistol or some other kind of weapon"
Prosecutors allege Mr Tobin, a Hells Angel, was killed by members of a rival gang, the Outlaws. According to reports from the BBC, Pawel Lec, speaking through a Polish interpreter, told Birmingham Crown Court he moved into the middle lane to allow a speeding Rover car to pass.
"I saw hands holding a pistol or some other kind of weapon. "There were two shots fired... the car drove off and it looked like nothing had happened to Gerry."
Two or three seconds later, he saw Mr Tobin let go of his bike handles and fall underneath Mr Lec's bike. The shots were fired one after another, with a short time lapse and from a weapon being held by two hands, he added. His pillion passenger, Marcin Cichocki, said he noticed the car even out its speed alongside Mr Tobin.
"From the left-hand side window a hand appeared holding what looked like a weapon. I am not 100% sure but I think he made some small movements with his hand - I thought it was some kind of joke or something," he said through an interpreter.
He then described how the hand went back into the car and Mr Tobin fell to the ground.
Karl Garside, 45, pleaded not guilty to murder during a previous hearing in February, while Simon Turner, 41, Dane Garside, 42, Malcolm Bull, 53, Dean Taylor, 47, and 46-year-old Ian Cameron entered their not guilty pleas last December.
Sean Creighton, 44, of Coventry, has admitted murder and firearms offences and will be sentenced later.
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