The mystery over the 2012 murders of a British-Iraqi family and a cyclist in the French Alps has not been solved following the arrest of an ex-policeman, the local prosecutor says.
The case is "not cleared up" and "there is no obvious link" between the 48-year-old and the murders, Annecy prosecutor Eric Maillaud told a press conference on Wednesday.
The man remained in custody for questioning, Maillaud said, adding that he was suspected of being involved in arms trafficking with an accomplice.
Maillaud said a second person close to the arrested man had been detained on Tuesday night after "trying to flee".
The ex-policeman was detained on Tuesday in the first arrest in France in the case.
Sources in the investigation had expressed caution over his possible involvement in the murders.
Saad al-Hilli, a 50-year-old Iraqi-born British tourist in France, was gunned down along with his 47-year-old wife Iqbal and her 74-year-old mother in a woodland car park close to the village of Chevaline in the hills above Lake Annecy.
The couple's two daughters survived the attack, but 45-year-old French cyclist Sylvain Mollier was also killed after apparently stumbling upon the scene.
Investigators had said the arrested man bore a strong resemblance to an identikit image released in November of a mysterious motorcyclist seen near where the quadruple murder occurred.
Several weapons were seized during a raid on the man's home on Tuesday.
