Four Germans were killed in a mid-air collision between a helicopter and a light aircraft in the Italian Alps on Friday with the other three victims were from Italy, France and Belgium, Italian police said on Sunday.
The US military on Thursday confirmed that one marine died in a collision between two US Marine Corps aircraft off the coast of western Japan.
Four people were killed and 20 others injured when a bus collided with five cars and plunged off a bridge onto railway tracks on Friday.
Two passenger trains collided on Monday in central Austria, killing one person and injuring 22 others, the police told AFP.
The tanker, carrying 136,000 tonnes of oil condensate, caught fire following the collision and its crew of 30 Iranians and two Bangladeshis were missing.
The Gotthard road tunnel under the Alps in Switzerland was closed for hours on Wednesday after a truck and a passenger car collided, killing two people and damaging the key transit route, police said.