Chelsea have begun to investigate after two of their fans were apparent stabbed in Istanbul last night, reports The Independent.
The Blues are in the Turkish capital for Wednesday night's Champions League last 16 first-leg tie against Galatasaray.
Incidents involving those aforementioned Chelsea supporters were reportedly around the same bar, but are thought to have been separate.
Injuries sustained by the pair are, thankfully, not thought to be serious but Chelsea will still be required to construct a report for UEFA.
Chelsea take on Galatasaray at the Turk Telecom Arena, with Jose Mourinho's men providing the last British hope of a positive result in this round given Manchester United's woeful 2-0 defeat to Greek champions Olympiacos on Tuesday night.
Galatasaray - now managed by former Manchester City boss Roberto Mancini - boast a number of familiar names in the likes of experienced Dutch playmaker Wesley Sneijder and former Chelsea stalwart Dider Drogba and should provide a stern test of the visitors' credentials.
Although they currently trail fierce rivals Fenerbahce by four points at the top of the Super Lig table, Galatasaray are the reigning Turkish champions.
Chelsea, meanwhile, have David Luiz, John Obi Mikel and Oscar back from injury and the Premier League will surely be confident in their ability to return to Stamford Bridge with a healthy lead.
I'm sure the entire footballing community will hope that there will be no repeat of such unsavoury incidents, however.