SCOTTISH Rugby chiefs have condemned the behaviour of a Glasgow Warriors player who punched another player in a disturbance at a kebab shop as 'completely unacceptable' he was found guilty and fined £750 for assault.

Forward Ryan Wilson, 25, who has been capped nine times for his country, was immediately suspended from club and international duty - a move that means he will miss the forthcoming Six Nations and possibly the World Cup in the autumn - after he was convicted of attacking Glasgow Hawks captain Ally Maclay, after a trial at Glasgow Sheriff Court.

Wilson, 25, who was wearing a Batman costume during a Halloween night out, on October 27 2013, in Great Western Road, Glasgow, pulled Gavin Quinn from a seat in the Barbeque Kings takeaway then punched Mr Maclay, who was in a Tweedledee costume.

Wilson was originally charged, along with Ryan Grant, 29, a Glasgow Warrior and British Lion, and club mate Rory Hughes, 21, of kicking and stamping on Mr Maclay to his severe injury. Mr Grant and Mr Hughes were found not proven and they will return to their club.

In a statement, Scottish Rugby said "This has been a wholly regrettable episode. Regardless of the verdict there is absolutely no place in the game, on or off the pitch, for the sort of behaviour that has led to criminal proceedings being taken.

"Rugby has a longstanding reputation as a family sport and all players have a responsibility to uphold the game's values.

"Those involved have learned a harsh lesson and I know that the three players, who are all our employees, are extremely chastened and remorseful.

It continued: "It's completely unaccepable for any player within our employment to let themselves get into such a situation and this case should act as a powerful reminder to all players that they are role models for our support."

It added that in addition to Wilson's suspension, the body will be considering at board level what further action is appropriate.

It added that Grant and Hughes had already been the subject of internal disciplinary action.

Scottish Rugby said that it 'acknowledges and regrets the effect this incident has had on Ally Maclay' and will be talking to him to find out if he needs any further support.

The court heard how, Mr Maclay, 30 said "leave it Batman" after  learning Wilson had grabbed his friend by his jumper and pulled him from a seat onto the floor in the kebab shop.

The rugby player and former Hawks captain was hit and ended up on the floor with Wilson and Mr Quinn and several others surrounding them.

After falling to the ground the PE teacher was left dazed, with a fractured eye socket and a bloodied face.

Jurors found Wilson guilty of punching Mr Maclay only, but not kicking and stamping on him, and found the charge against the other two not proven.

Sheriff Martin Jones QC was invited to impose an absolute discharge on Wilson, meaning he would have no criminal record, but told him: "I do not consider that it would be appropriate."

Fining Wilson £250 for assault on Mr Quinn and £500 for the assault on Mr Maclay, the sheriff told the rugby player that both assaults "appeared to be unprovoked" and within a short time of one another, and after drinking alcohol.

He added: "There's nothing unusual about that situation."

During the trial, father of-two Wilson admitted assaulting Gavin Quinn, by pulling him onto the floor.

The court heard Wilson wanted to sit in the booth beside Quinn so he could speak to his rugby colleague, Richie Vernon - dressed as a shark - but he was told to go away.

Wilson put his foot on the table in a bid to climb over into the seat, but Quinn pushed it away.

He then grabbed hold of Quinn and pulled him from the seat on to the floor and there was a bit of a struggle between the men which "fizzled off".

Mr Maclay then came in to the food joint and was told by his friend what had happened to him.

Colm Dempsey, representing Wilson, handed the sheriff a number of testimonials on his client's behalf.

He said in addition to being capped, he ha played 88 club games and until this incident his disciplinary record was clean.

Mr Dempsey said: "Mr Wilson plays a part in the club's community work which involves coaching sessions at local schools and visits to Yorkhill Children's Hospital."

The lawyer said Wilson believes he has "let himself, his club and his country down".

Glasgow Hawks said in a statement it would be continuing to supports its player. It added: "The club hope that a lesson has been learned from these events about the standard of behaviour which should be expected from rugby players."