Per the BBC, 11 people were hospitalised, two of whom are still in a critical condition, when two men boarded a train from Doncaster to London and went on a stabbing spree.
Police were called to Huntingdon railway station at around 7.42pm on Saturday, since then 32-year-old and a 35-year-old have been arrested and questioned.
Nottingham Forest are aware than a number of their fans were on that train following 2-2 Premier League draw with Man United.
Owner Marinakis and the club have expressed his sympathies to those effected, with the 58-year-old pledging financial support to any fans that have been caught up.
A club statement reads: "Nottingham Forest Football Club wishes to express its deepest concern and heartfelt sympathy to all those affected by the shocking attack on an LNER train bound for London yesterday evening.
“Many of our London-based supporters were travelling home on that train following our match at the City Ground, and our thoughts are very much with everyone caught up in such a distressing incident.
“The Club is aware that many individuals demonstrated extraordinary bravery which undoubtedly helped prevent even greater harm. The entire Nottingham Forest family stands firmly behind them as they recover from the events of yesterday."
Marinakis added: "Everyone at Nottingham Forest is shocked and deeply saddened by what happened. The courage and selflessness shown by our supporters on that train represents the very best of humanity and the very best of our club’s community.
“We will make sure any supporter caught up in this incident receives whatever financial support they require to enable them to access the best possible medical care as they recover. Our thoughts and prayers are with all those affected."