French police have released a sketch of a man wanted for questioning in connection to the Alps murders of British-Iraqi Saad al-Hilli, his wife and her mother, in September last year.
A French cyclist was also shot dead. Mr al-Hilli's two daughters survived the attack on a remote road near Lake Annecy.
Investigators quoted on the Le Monde website stressed that attention should be paid to the dark or black helmet worn by the motorcyclist with an opening at the chin.
More top news
French President Francois Hollande today led a memorial service to the 130 victims of the Paris attacks in the city.
Cameron announces Commonwealth nations intention to set up specialist unit to target extremist "scourge" fuelling international terrorism.
People across France display the Tricolore in tribute to the 130 victims of the Paris attacks ahead of a memorial service in the city.