Police officers investigating the horrific massacre of a British family in the French alps believe they were murdered by a crazed serial killer with a hatred of tourists.

The Sun newspaper claims that police have linked the murders of Saad al-Hilli, wife Iqbal and mum-in-law Suhaila Iqbal with another tourist killing.

The motive for the murders, which happened while the family were on a camping holiday, has so far been a mystery to French police.

However, detectives now appear to have linked the murders with that of Xavier Baligant, 29, who was shot four times at a rest area off the A13 near Nancy in July. His sons, Dylan, five, and Jordan, seven, were in the car at the time, and were left unharmed.