French quartet tested for dope
The four, who were not named, were woken just before 07.00 local time (06.00 GMT) at their base in Croydon, south London, to give urine and blood tests, the official told AFP.
ADVERTISEMENT
The tests were carried out by the UK Anti-Doping Agency (UKAD), which World Rugby has put in charge of the hunt for banned substances at the World Cup which starts Friday.
French players have been chosen for tests four times in the past two months. France's first World Cup match is against Italy at Twickenham on Saturday.
Agence France-Presse