Brighton have launched an investigation after a video emerged of four players inhaling from balloons during the club's winter break in Spain, reports BBC Sport.

Shane Duffy, Pascal Gross, Leandro Trossard and Alireza Jahanbakhsh were shown, although it is not known what - if anything - was in the balloons.

A club spokesperson said: "The club is aware of the video circulating on social media.

"This matter is being dealt with internally."