Four Portuguese tourists were killed and 27 others were injured when their bus crashed off a highway in the eastern French department of Saone-et-Loire early on Sunday. /CFP Photo

The 40-seat bus was on its way to Switzerland when it crashed off the Central Europe Atlantic Road, known locally as the "road of death." /CFP Photo

The driver may have lost control of the bus due to ice on the road. Local authorities updated that one of the passengers was resuscitated by rescue workers. They had previously reported five deaths. /CFP Photo

In March last year, 12 Portuguese passengers died in a van crash on the same motorway. /CFP Photo