It's funny that the only people on the web who seem to be holding Alty fans responsible for this are Blind Bat and others on this forum. The club make no implication whatsoever that they think Alty fans were responsible: they only note that smoke 'flares' were thrown (which is an undisputed fact) and they are asking whether some Alty fans have any information about that. The club also makes it clear that the FA has asked them to do something like this.
For the record, the club's statement on the website is:
"During the Stalybridge Celtic v Altrincham game last week, smoke "flares" were thrown onto the pitch. As a consequence, the FA has asked the clubs for their comments on the incident and to outline their plans to prevent any reoccurrence of such behaviour. Ultimately one, or both, clubs could be charge with misconduct and could be fined. It is therefore important that the perpetrators are identified to minimize the damage to the reputation of the clubs and to minimize the chance of any reoccurrence.
Altrincham FC views such behaviour extremely seriously and, to that end, it is appealing to any supporters who may have information regarding the incident to contact the Club as soon as possible. All information will be handled in the strictest confidence."