The Four Robbers

Former member of a gang of burglars called the four robbers, two of whom died in the last robbery that went wrong, Loïc was recaptured by the police two days after the robbery after having carefully taken the time to hide the loot. He was tried and imprisoned for 15 years. The fourth member of the gang escaped and was never heard from again. 15 years later, he resurfaces and is determined to get his share. Who is this mystery person and where is Loïc Bertens hiding? Is he still alive? Would he have changed his name for more protection?