Former Argentina international Federico Martin Aramburu was reportedly shot dead in France early on Saturday morning.
According to L’equipAramburu was killed in a drive-by shooting in Paris.
A French newspaper reported that early in the morning he was involved in an altercation in a bar with a group of people who later returned in a car and shot him dead.
The Paris prosecutor’s office opened a murder case. Police are reportedly looking for three suspects.
A tribute to Arambour was paid before France’s final Six Nations match against England at the Stade de France, and his image was shown on the stadium’s big screen.
Dimitri Yachvili, former France midfielder and teammate of Aramburu in Biarritz, said “the game has lost a brother who loved life”.
Aramburu was “always positive, lively and full of energy,” Yachvili told Sud Ouest newspaper.
“More than a great teammate, he was a handsome man who loved rugby.”
Aramburu played for French clubs Perpignan, Biarritz and Ducks before joining the Glasgow Warriors in 2010.
The warriors said they were “shocked and saddened” by Aramburu’s “sudden and tragic death”.
They added: “The epitome of a true warrior and beloved by all, thoughts of all former and present at the club, with their families at this extremely difficult time.”
Cougars said they “won’t forget his try and his performance” at the 2007 World Championships where he scored two tries.
The former club Biarritz expressed “the most sincere condolences to his family”. [and] his close relatives” and assured them of his “full support”.