LISBON (Reuters) - Former Germany and Chelsea midfielder Michael Ballack's 18-year-old son Emilio died in a quad-bike accident near Lisbon on Thursday, Setubal's emergency services said.

A spokesperson for the emergency operations told Reuters Emilion died at 2.17 am in the holiday destination Troia, south of Lisbon. The 18-year-old was involved in a four-wheel crash.