An NRL spokesperson confirmed the Bulldogs had informed them about the matter"and it's being looked into".
Lamb told theHerald on Thursday night he was outside the"bubble"and only at training after he had handed over a jersey for Foran's special game against St George Illawarra on Monday.
"I had to drop a jersey off for'Foz'and his 200th game,I handed it to[team manager] Freddy Ciraldo and then I watched the boys run out,"Lamb said.