"You'll just have to trust me on this," he said when asked to explain.
Police have previously said there were at least three people involved in the abduction and murder of Bosma: the two men who went with him to test drive his Dodge Ram pickup truck that was for sale and another person following behind them in another vehicle. Police had left open the possibility there could be more than one individual in that following vehicle, which has only been described as an "SUV-type vehicle."
Now, however, Kavanagh says he believes there was only one person inside the second vehicle.