Albion have praised their fans at AEK and vowed to investigate post-match teargas scenes.

The travelling supporters were affected by what have been described as minor incidents.

Albion praised AEK as hosts after the hard-fought 1-0 win.

A club spokesperson said: “Once again the travelling Albion fans have been a credit to the club and supported the team on another historic night for the club. 

“We are aware of a small number of minor incidents at full-time in the home section of the ground. 

“We understand this resulted in police clearing the home area with the use of teargas. None was directed at the away section.

“However we are also aware that this inadvertently affected a number of Albion supporters in the away section. 

“We will investigate further and seek clarity from AEK Athens - who as a club were excellent hosts - and from UEFA, but at this point will not make any further comment.”