The IRFU is "committed to eliminating any anti-social behaviour".
An investigation has been launched by Irish Rugby after two anti-social behaviour incidents involving two Leinster players.
The first of the alleged incidents centres on a Leinster player urinating on the leg of a man last weekend.
It is believed to have happened while players were celebrating their Pro 14 title win last Sunday in a busy Dublin city centre pub.
The second alleged incident involves a Leinster Academy player being knocked out after being punched by a former Leinster player.
According to the Sunday Independent, the young player needed hospital treatment and suffered concussion.
An IRFU spokesman said that the organisation "condemns, and is committed to eliminating, any anti-social behaviour within the game, at all levels."
Leinster rugby has not commented on the matter but confirmed it is liaising with the IRFU over the allegations.