A 15-year-old boy has reportedly been arrested after a taxi driver was sprayed with an unknown substance causing serious injuries to the driver. The incident took place late on Sunday night in High Wycombe when the driver was initially bilked by three passengers. The driver quickly caught up with the group, but that was when the attack is alleged to have happened. The teenager was later arrested on suspicion of causing grievous bodily harm with intent. The taxi driver, 43, is still receiving treatment for his injuries in hospital while police ascertain which one of the group sprayed the substance.